A demonstrator is treated after being affected by an irritant during a protest near the Charlotte Convention Center, the site of the Republican National Convention, in Charlotte, North Carolina, U.S., August 22, 2020. REUTERS/Leah Millis

A demonstrator is doused with milk after being hit by an eye irritant during a protest against the death in Minneapolis police custody of George Floyd, in Minneapolis, Minnesota, U.S., May 30, 2020. REUTERS/Lucas Jackson

A man is doused with milk and sprayed with mist after being hit by an eye irritant from security forces in Ferguson, Missouri, U.S., August 20, 2014. Picture taken August 20, 2014. REUTERS/Adrees Latif/File Photo SEARCH "POY DECADE" FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2019 PACKAGES. TPX IMAGES OF THE DAY.

Reduced to a string of stagnant mustard-coloured pools, fouled in places with pesticide runoff and stinking with the rotting carcasses of cattle and fish, the Darling River is running dry. The parched earth of Australia's longest waterway, if tributaries are included, is in the grip of the continent's most severe drought in a century. At Menindee, 830 km west of Sydney, despair has turned to anger as residents blame the government for exacerbating the drought by drawing down river water in 2017 for irrigation and other uses downstream. Locals now avoid using tap water for drinking and washing babies and children, saying it has caused skin irritation, and prefer boxed and bottled water instead. REUTERS/Tracey Nearmy SEARCH "NEARMY DROUGHT" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. Matching text: AUSTRALIA-DROUGHT/RIVER TPX IMAGES OF THE DAY

Shoes painted with traditional motifs are worn by Barkindji elder Patricia Doyle as she walks through her garden drinking a cup of tea made from boxed water at her home in Menindee, New South Wales, Australia, September 29, 2019. At Menindee, 830 km west of Sydney, despair has turned to anger as residents blame the government for exacerbating the drought by draining the river in 2017 floodtimes to irrigate farmland. Locals now avoid using tap water for drinking and washing babies and children, saying it has caused skin irritation, and prefer boxed and bottled water instead. "That was our food source, the river, our water source. That was our livelihood," said Doyle. "When you live on a river and you have to have water brought into your town to drink and survive on, what's that saying? It's saying that our system ... isn't looked after properly." REUTERS/Tracey Nearmy SEARCH "NEARMY DROUGHT" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

The Barbie dolls of Barkindji elder Patricia Doyle's granddaughter wait in the bathroom to be cleaned at her home in Menindee, New South Wales, Australia, September 29, 2019. At Menindee, 830 km west of Sydney, despair has turned to anger as residents blame the government for exacerbating the drought by draining the river in 2017 floodtimes to irrigate farmland. Locals now avoid using tap water for drinking and washing babies and children, saying it has caused skin irritation, and prefer boxed and bottled water instead. "That was our food source, the river, our water source. That was our livelihood," said Doyle. "When you live on a river and you have to have water brought into your town to drink and survive on, what's that saying? It's saying that our system ... isn't looked after properly." REUTERS/Tracey Nearmy SEARCH "NEARMY DROUGHT" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Barkindji elder Patricia Doyle uses boxed water to make a cup of tea at her home in Menindee, New South Wales, Australia, September 29, 2019. At Menindee, 830 km west of Sydney, despair has turned to anger as residents blame the government for exacerbating the drought by draining the river in 2017 floodtimes to irrigate farmland. Locals now avoid using tap water for drinking and washing babies and children, saying it has caused skin irritation, and prefer boxed and bottled water instead. "That was our food source, the river, our water source. That was our livelihood," said Doyle. "When you live on a river and you have to have water brought into your town to drink and survive on, what's that saying? It's saying that our system ... isn't looked after properly." REUTERS/Tracey Nearmy SEARCH "NEARMY DROUGHT" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Barkindji elders Patricia (Patsy) Quayle (R) and her daughter Patricia Doyle use bottled water at their campsite on the dry lakebed of Lake Pamamaroo at Yaama Ngunna Baaka Corroboree Festival, in Menindee, New South Wales, Australia, October 2, 2019. At Menindee, 830 km west of Sydney, despair has turned to anger as residents blame the government for exacerbating the drought by draining the river in 2017 floodtimes to irrigate farmland. Locals now avoid using tap water for drinking and washing babies and children, saying it has caused skin irritation, and prefer boxed and bottled water instead. "That was our food source, the river, our water source. That was our livelihood," said Doyle. "When you live on a river and you have to have water brought into your town to drink and survive on, what's that saying? It's saying that our system ... isn't looked after properly." REUTERS/Tracey Nearmy SEARCH "NEARMY DROUGHT" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Reduced to a string of stagnant mustard-coloured pools, fouled in places with pesticide runoff and stinking with the rotting carcasses of cattle and fish, the Darling River is running dry. The parched earth of Australia's longest waterway, if tributaries are included, is in the grip of the continent's most severe drought in a century. At Menindee, 830 km west of Sydney, despair has turned to anger as residents blame the government for exacerbating the drought by drawing down river water in 2017 for irrigation and other uses downstream. Locals now avoid using tap water for drinking and washing babies and children, saying it has caused skin irritation, and prefer boxed and bottled water instead. REUTERS/Tracey Nearmy SEARCH "NEARMY DROUGHT" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. Matching text: AUSTRALIA-DROUGHT/RIVER TPX IMAGES OF THE DAY

A supporter of Richard Spencer, an avowed white nationalist and spokesperson for the so-called alt-right movement, reacts to being sprayed by an irritant by a demonstrator after his speech on the campus of the University of Florida in Gainesville, Florida, U.S., October 19, 2017. REUTERS/Shannon Stapleton

A supporter of Richard Spencer, an avowed white nationalist and spokesperson for the so-called alt-right movement, reacts to being sprayed by an irritant by a demonstrator after his speech on the campus of the University of Florida in Gainesville, Florida, U.S., October 19, 2017. REUTERS/Shannon Stapleton

A Reizstoffgeraet 2000 irritant device is displayed at the Waffenplatz Zuerich-Reppischtal base of the Swiss Army in Birmensdorf, Switzerland January 19, 2017. REUTERS/Arnd Wiegmann

A police officer sprays the crowd with an irritant during a protest against the election of Republican Donald Trump as President of the United States in Portland, Oregon, U.S. November 12, 2016. REUTERS/William Gagan

A police officer sprays the crowd with an irritant during a protest against the election of Republican Donald Trump as President of the United States in Portland, Oregon, U.S. November 12, 2016. REUTERS/William Gagan

A police officer sprays the crowd with an irritant during a protest against the election of Republican Donald Trump as President of the United States in Portland, Oregon, U.S. November 12, 2016. REUTERS/William Gagan

A poster advertises a kind of North Korean toothpaste said to whiten teeth and ease skin irritation in a Pyongyang hotel shop, North Korea May 4, 2016. REUTERS/James Pearson

French high school students attend a demonstration against the French labour law proposal in Marseille, France, April 9, 2016. The banner reads "Youth irritated". REUTERS/Jean-Paul Pelissier

ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATHA man lies in a hospital after being wounded from mortar shells, in Taza, Iraq, March 10, 2016. More than 40 people suffered partial choking and skin irritation in northern Iraq when Islamic State fired mortar shells and Katyusha rockets filled with "poisonous substances" into their village late on Tuesday, local officials said. REUTERS/Ako Rasheed

ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATHA man lies in a hospital after being wounded from mortar shells, in Taza, Iraq, March 10, 2016. More than 40 people suffered partial choking and skin irritation in northern Iraq when Islamic State fired mortar shells and Katyusha rockets filled with "poisonous substances" into their village late on Tuesday, local officials said. REUTERS/Ako Rasheed

Migrants who are waiting to cross the Greek-Macedonian border, talk to police officers in a makeshift camp, near the Greek village of Idomeni March 2, 2016. The number of migrants awaiting passage to central and northern Europe swelled on Greece's border with Macedonia on Wednesday as the frontier remained shut, adding to a humanitarian crisis and deep fissures within the European Union.REUTERS/Marko Djurica

Migrants who are waiting to cross the Greek-Macedonian border, talk to police officers in a makeshift camp, near the Greek village of Idomeni March 2, 2016. The number of migrants awaiting passage to central and northern Europe swelled on Greece's border with Macedonia on Wednesday as the frontier remained shut, adding to a humanitarian crisis and deep fissures within the European Union.REUTERS/Marko Djurica

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Senator Robert Menendez (D-NJ) questions U.S. Secretary of State John Kerry (not pictured) at the Senate Foreign Relations Committee in Washington July 23, 2015. U.S. lawmakers skeptical about the nuclear deal with Iran promised to press senior Obama administration officials to make more information about it public at a Senate hearing on Thursday as Congress begins its two-month review of the agreement.
REUTERS/Gary Cameron

Samsung C&T Corp stockholders wait in line to get into a general meeting in Seoul, South Korea, July 17, 2015. Win or lose in its bid to derail an $8 billion Samsung Group merger on Friday, U.S. hedge fund Elliott Associates is likely to remain an irritant for the biggest of South Korea's powerful conglomerates. Even if construction firm Samsung C&T Corp secures the two-thirds of shares voted on Friday needed for a buyout offer from sister company Cheil Industries, Elliott shows no sign of going away. The fund is widely expected to continue challenging Samsung with lawsuits as a shareholder that would have more than 2 percent of the merged firm. REUTERS/Kim Hong-Ji

Samsung C&T Corp stockholders wait in line to get into a general meeting in Seoul, South Korea, July 17, 2015. Win or lose in its bid to derail an $8 billion Samsung Group merger on Friday, U.S. hedge fund Elliott Associates is likely to remain an irritant for the biggest of South Korea's powerful conglomerates. Even if construction firm Samsung C&T Corp secures the two-thirds of shares voted on Friday needed for a buyout offer from sister company Cheil Industries, Elliott shows no sign of going away. The fund is widely expected to continue challenging Samsung with lawsuits as a shareholder that would have more than 2 percent of the merged firm. REUTERS/Kim Hong-Ji

Samsung C&T Corp stockholders wait to get into a general meeting in Seoul, South Korea, July 17, 2015. Win or lose in its bid to derail an $8 billion Samsung Group merger on Friday, U.S. hedge fund Elliott Associates is likely to remain an irritant for the biggest of South Korea's powerful conglomerates. Even if construction firm Samsung C&T Corp secures the two-thirds of shares voted on Friday needed for a buyout offer from sister company Cheil Industries, Elliott shows no sign of going away. The fund is widely expected to continue challenging Samsung with lawsuits as a shareholder that would have more than 2 percent of the merged firm. REUTERS/Kim Hong-Ji

A Samsung C&T Corp stockholder covers her face with an envelope while waiting in line to get into a general meeting in Seoul, South Korea, July 17, 2015. Win or lose in its bid to derail an $8 billion Samsung Group merger on Friday, U.S. hedge fund Elliott Associates is likely to remain an irritant for the biggest of South Korea's powerful conglomerates. Even if construction firm Samsung C&T Corp secures the two-thirds of shares voted on Friday needed for a buyout offer from sister company Cheil Industries, Elliott shows no sign of going away. The fund is widely expected to continue challenging Samsung with lawsuits as a shareholder that would have more than 2 percent of the merged firm. REUTERS/Kim Hong-Ji

Samsung C&T Corp stockholders wait in a line to get into a general meeting in Seoul, South Korea, July 17, 2015. Win or lose in its bid to derail an $8 billion Samsung Group merger on Friday, U.S. hedge fund Elliott Associates is likely to remain an irritant for the biggest of South Korea's powerful conglomerates. Even if construction firm Samsung C&T Corp secures the two-thirds of shares voted on Friday needed for a buyout offer from sister company Cheil Industries, Elliott shows no sign of going away. The fund is widely expected to continue challenging Samsung with lawsuits as a shareholder that would have more than 2 percent of the merged firm. REUTERS/Kim Hong-Ji

Choi Chi-hun, President and CEO at Samsung C&T Corporation, stands in front of media upon his arrival at a general meeting of stockholders in Seoul, South Korea, July 17, 2015. Win or lose in its bid to derail an $8 billion Samsung Group merger on Friday, U.S. hedge fund Elliott Associates is likely to remain an irritant for the biggest of South Korea's powerful conglomerates. Even if construction firm Samsung C&T Corp secures the two-thirds of shares voted on Friday needed for a buyout offer from sister company Cheil Industries, Elliott shows no sign of going away. The fund is widely expected to continue challenging Samsung with lawsuits as a shareholder that would have more than 2 percent of the merged firm. REUTERS/Kim Hong-Ji

Choi Chi-hun (R), President and CEO at Samsung C&T Corporation, is surrounded by media upon his arrival at a general meeting of stockholders in Seoul, South Korea, July 17, 2015. Win or lose in its bid to derail an $8 billion Samsung Group merger on Friday, U.S. hedge fund Elliott Associates is likely to remain an irritant for the biggest of South Korea's powerful conglomerates. Even if construction firm Samsung C&T Corp secures the two-thirds of shares voted on Friday needed for a buyout offer from sister company Cheil Industries, Elliott shows no sign of going away. The fund is widely expected to continue challenging Samsung with lawsuits as a shareholder that would have more than 2 percent of the merged firm. REUTERS/Kim Hong-Ji

Employees are reflected on a logo of Samsung C&T Corp at the company's headquarters in Seoul, South Korea, July 16, 2015. Win or lose in its bid to derail an $8 billion Samsung Group merger on Friday, U.S. hedge fund Elliott Associates is likely to remain an irritant for the biggest of South Korea's powerful conglomerates. Even if construction firm Samsung C&T Corp secures the two-thirds of shares voted on Friday needed for a buyout offer from sister company Cheil Industries, Elliott shows no sign of going away. The fund is widely expected to continue challenging Samsung with lawsuits as a shareholder that would have more than 2 percent of the merged firm. To match SAMSUNG C&T-M&A/CHEIL INDUSTRIES REUTERS/Kim Hong-Ji

An employee walks past a logo of Samsung C&T Corp at the company's headquarters in Seoul, South Korea, July 16, 2015. Win or lose in its bid to derail an $8 billion Samsung Group merger on Friday, U.S. hedge fund Elliott Associates is likely to remain an irritant for the biggest of South Korea's powerful conglomerates. Even if construction firm Samsung C&T Corp secures the two-thirds of shares voted on Friday needed for a buyout offer from sister company Cheil Industries, Elliott shows no sign of going away. The fund is widely expected to continue challenging Samsung with lawsuits as a shareholder that would have more than 2 percent of the merged firm. To match SAMSUNG C&T-M&A/CHEIL INDUSTRIES REUTERS/Kim Hong-Ji

An employee walks past a logo of Samsung C&T Corp at the company's headquarters in Seoul, South Korea, July 16, 2015. Win or lose in its bid to derail an $8 billion Samsung Group merger on Friday, U.S. hedge fund Elliott Associates is likely to remain an irritant for the biggest of South Korea's powerful conglomerates. Even if construction firm Samsung C&T Corp secures the two-thirds of shares voted on Friday needed for a buyout offer from sister company Cheil Industries, Elliott shows no sign of going away. The fund is widely expected to continue challenging Samsung with lawsuits as a shareholder that would have more than 2 percent of the merged firm. To match SAMSUNG C&T-M&A/CHEIL INDUSTRIES REUTERS/Kim Hong-Ji

Employees walk past a logo of Samsung C&T Corp at the company's headquarters in Seoul, South Korea, July 16, 2015. Win or lose in its bid to derail an $8 billion Samsung Group merger on Friday, U.S. hedge fund Elliott Associates is likely to remain an irritant for the biggest of South Korea's powerful conglomerates. Even if construction firm Samsung C&T Corp secures the two-thirds of shares voted on Friday needed for a buyout offer from sister company Cheil Industries, Elliott shows no sign of going away. The fund is widely expected to continue challenging Samsung with lawsuits as a shareholder that would have more than 2 percent of the merged firm. To match SAMSUNG C&T-M&A/CHEIL INDUSTRIES REUTERS/Kim Hong-Ji

A girl with her body covered with Multani Mitti or Fuller's earth is seen at a marketplace in the old quarters of Delhi June 19, 2015. Multani Mitti is believed to heal skin irritation. REUTERS/Anindito Mukherjee TPX IMAGES OF THE DAY

Turkish President Tayyip Erdogan's Presidential Palace complex is pictured in Ankara, Turkey, May 28, 2015. Irritated by accusations of lavishness, Erdogan has vowed to resign if the leader of the main opposition can find a single golden toilet seat in his vast new palace. Kemal Kilicdaroglu of the Republican People's Party (CHP) has repeatedly criticised Erdogan's profligacy in campaign speeches ahead of a June 7 parliamentary election. "Gentlemen in Ankara, palaces have been built for you, planes bought, Mercedes cars purchased ... golden seats have been bought, that's how you use the toilet," Kilicdaroglu said at a rally in the Aegean city of Izmir on Saturday. Erdogan, who moved into the controversial new 1,000-room palace complex after winning a presidential election last August, challenged Kilicdaroglu to prove his assertion. Picture taken May 28, 2015. REUTERS/Umit Bektas

A Boca Juniors' fan prepares to throw a bottle into the pitch while players of River Plate leave during their Copa Libertadores soccer match in Buenos Aires, Argentina, May 15, 2015. The Libertadores Cup derby between Boca Juniors and River Plate was called off at halftime on Thursday after River players were affected by an irritant that appeared to have been sprayed from the crowd. REUTERS/Enrique Marcarian

Anti-riot policemen surround referee Dario Herrera (C) after the Copa Libertadores soccer match against River Plate was suspended in Buenos Aires, Argentina, May 14, 2015. The Libertadores Cup derby between Boca Juniors and River Plate was called off at halftime on Thursday after River players were affected by an irritant that appeared to have been sprayed from the crowd. REUTERS/Enrique Marcarian

Boca Juniors' Daniel Osvaldo (L) gestures after the Copa Libertadores soccer match against River Plate was suspended in Buenos Aires, Argentina, May 14, 2015. The Libertadores Cup derby between Boca Juniors and River Plate was called off at halftime on Thursday after River players were affected by an irritant that appeared to have been sprayed from the crowd. REUTERS/Enrique Marcarian

Players of Boca Juniors stand on the pitch after the Copa Libertadores soccer match against River Plate was suspended in Buenos Aires, Argentina, May 14, 2015. The Libertadores Cup derby between Boca Juniors and River Plate was called off at halftime on Thursday after River players were affected by an irritant that appeared to have been sprayed from the crowd. REUTERS/Enrique Marcarian

A Boca Juniors' fan throws an object onto the pitch while players of River Plate leave during their Copa Libertadores soccer match in Buenos Aires, Argentina, May 15, 2015. The Libertadores Cup derby between Boca Juniors and River Plate was called off at halftime on Thursday after River players were affected by an irritant that appeared to have been sprayed from the crowd. REUTERS/Enrique Marcarian

A Boca Juniors' fan prepares to throw a bottle into the pitch while players of River Plate leave during their Copa Libertadores soccer match in Buenos Aires, Argentina, May 15, 2015. The Libertadores Cup derby between Boca Juniors and River Plate was called off at halftime on Thursday after River players were affected by an irritant that appeared to have been sprayed from the crowd. REUTERS/Enrique Marcarian

River Plate's head coach Marcelo Gallardo (C) leaves after their Copa Libertadores soccer match against Boca Juniors was suspended in Buenos Aires early May 15, 2015. The Libertadores Cup derby between Boca Juniors and River Plate was called off at halftime on Thursday after River players were affected by an irritant that appeared to have been sprayed from the crowd. REUTERS/Marcos Brindicci

River Plate's players (in red) try to take cover as they leave after their Copa Libertadores soccer match against Boca Juniors was suspended in Buenos Aires early May 15, 2015. The Libertadores Cup derby between Boca Juniors and River Plate was called off at halftime on Thursday after River players were affected by an irritant that appeared to have been sprayed from the crowd. REUTERS/Marcos Brindicci

Former Seoul bureau chief of Japan's Sankei Shimbun newspaper, Tatsuya Kato (R), speaks to the media upon his arrival at Haneda international airport in Tokyo April 14, 2015. South Korea lifted a travel ban on a Japanese journalist on trial for a charge of defaming South Korean President Park Geun-hye, a prosecution official said on Tuesday, removing what has been an irritant in bilateral relations.
REUTERS/Toru Hanai

Former Seoul bureau chief of Japan's Sankei Shimbun newspaper, Tatsuya Kato, speaks to the media upon his arrival at Haneda international airport in Tokyo April 14, 2015. South Korea lifted a travel ban on a Japanese journalist on trial for a charge of defaming South Korean President Park Geun-hye, a prosecution official said on Tuesday, removing what has been an irritant in bilateral relations. REUTERS/Toru Hanai

Former Seoul bureau chief of Japan's Sankei Shimbun newspaper, Tatsuya Kato (top C), speaks to the media upon his arrival at Haneda international airport in Tokyo April 14, 2015. South Korea lifted a travel ban on a Japanese journalist on trial for a charge of defaming South Korean President Park Geun-hye, a prosecution official said on Tuesday, removing what has been an irritant in bilateral relations.
REUTERS/Toru Hanai

Former Seoul bureau chief of Japan's Sankei Shimbun newspaper, Tatsuya Kato (C), speaks to the media upon his arrival at Haneda international airport in Tokyo April 14, 2015. South Korea lifted a travel ban on a Japanese journalist on trial for a charge of defaming South Korean President Park Geun-hye, a prosecution official said on Tuesday, removing what has been an irritant in bilateral relations.
REUTERS/Toru Hanai

Former Seoul bureau chief of Japan's Sankei Shimbun newspaper, Tatsuya Kato, walks upon his arrival at Haneda international airport in Tokyo April 14, 2015. South Korea lifted a travel ban on a Japanese journalist on trial for a charge of defaming South Korean President Park Geun-hye, a prosecution official said on Tuesday, removing what has been an irritant in bilateral relations. REUTERS/Toru Hanai

Former Seoul bureau chief of Japan's Sankei Shimbun newspaper, Tatsuya Kato, speaks to the media upon his arrival at Haneda international airport in Tokyo April 14, 2015. South Korea lifted a travel ban on a Japanese journalist on trial for a charge of defaming South Korean President Park Geun-hye, a prosecution official said on Tuesday, removing what has been an irritant in bilateral relations. REUTERS/Toru Hanai

Former Seoul bureau chief of Japan's Sankei Shimbun newspaper, Tatsuya Kato, bows as he speaks to the media upon his arrival at Haneda international airport in Tokyo April 14, 2015. South Korea lifted a travel ban on a Japanese journalist on trial for a charge of defaming South Korean President Park Geun-hye, a prosecution official said on Tuesday, removing what has been an irritant in bilateral relations. REUTERS/Toru Hanai

Former Seoul bureau chief of Japan's Sankei Shimbun newspaper, Tatsuya Kato, walks upon his arrival at Haneda international airport in Tokyo April 14, 2015. South Korea lifted a travel ban on a Japanese journalist on trial for a charge of defaming South Korean President Park Geun-hye, a prosecution official said on Tuesday, removing what has been an irritant in bilateral relations. REUTERS/Toru Hanai

A man carries his daughter on his luggage case at a railway station in Beijing February 16, 2015. Chinese Ministry of Transport said a total of 2.807 billion trips are expected to be made during the 40-day Spring Festival travel rush, which started on February 4 and will last until March 16, Xinhua News Agency reported. REUTERS/Kim Kyung-Hoon (CHINA - Tags: TRANSPORT SOCIETY)

U.S. Assistant Secretary of State Roberta Jacobson (R) greets opposition blogger Yoani Sanchez at a meeting in Havana January 23, 2015. Jacobson, in Cuba for negotiations on restoring long-frozen diplomatic relations, met a group of dissidents on Friday, seeking to underline Washington's concern over human rights but irritating the island's communist government. REUTERS/Desmond Boylan/Pool (CUBA - Tags: POLITICS)

U.S. Assistant Secretary of State Roberta Jacobson (R) talks with opposition blogger Yoani Sanchez during a meeting in Havana January 23, 2015. Jacobson, in Cuba for negotiations on restoring long-frozen diplomatic relations, met a group of dissidents on Friday, seeking to underline Washington's concern over human rights but irritating the island's communist government. REUTERS/Desmond Boylan/Pool (CUBA - Tags: POLITICS)

A police officer sprays a chemical irritant at protesters while another guards him during a protest to demand justice for the killing of 18-year-old Michael Brown, outside the Ferguson Police Department in Ferguson, Missouri November 28, 2014. Ferguson, a predominantly black city of about 21,000 people where almost all the political leaders and police are white, became the focal point of a national debate on race relations after police officer Darren Wilson shot and killed Brown on August 9. REUTERS/Lucas Jackson (UNITED STATES - Tags: CIVIL UNREST CRIME LAW)

A man is doused with milk and sprayed with mist after being hit by an eye irritant from security forces in Ferguson, Missouri in this August 20, 2014 file photo.

As the evening rolled past midnight, I saw one man among the crowd who looked particularly agitated. He seemed to be a local resident, very upset with the police, and people were holding him back as he yelled towards the officers. As he kept shouting, the police targeted him with some kind of eye irritant it looked like pepper spray. He wasn't very close, but they got him right in the eye and his friends immediately pulled him to a parking lot nearby, where they poured milk on his face to flush away the effects of the spray.

As they started to pour the milk, I began photographing and noticed a bright spotlight in the background. I believe it was from the police. At that point the people taking care of the man started spraying mist or water to further clear his eyes and I positioned my camera and used the light source to create a rim light around his head and bring attention to the droplets. - Adrees Latif
REUTERS/Adrees Latif (UNITED STATES - Tags: CRIME LAW CIVIL UNREST TPX IMAGES OF THE DAY)

ATTENTION EDITORS: THIS PICTURE IS PART OF THE PACKAGE 'PICTURES OF THE YEAR 2014 - THE PHOTOGRAPHERS' STORY'. SEARCH 'PHOTOGRAPHERS' STORY' FOR ALL IMAGES'

Members of Special Police Support Unit pose for photo in front of their base in central Bosnian town of Zenica, October 3, 2014. When the killing of an unarmed black teenager by a white policeman in Ferguson, Missouri, in August sparked sometimes violent protests, the response of police in camouflage gear and armoured vehicles wielding stun grenades and assault rifles seemed more like a combat operation than a public order measure. Some U.S. police departments have recently acquired U.S. military-surplus hardware from wars abroad, but there are many law enforcers around the world whose rules of engagement also allow the use of lethal force with relatively few restrictions. But for every regulation that gives police wide scope to use firearms, there is another code that sharply limits their use. In Bosnia, police are permitted to use force ranging from batons to chemical irritants, water cannon, "binding agents, special firearms and explosive devices", following a warning, but only when other methods of control have proved ineffective, and not against the young, old or disabled unless these use firearms. The method must be "proportional to the resistance or violence coming from the person on whom the force is used". Picture taken October 3. REUTERS/Dado Ruvic (BOSNIA AND HERZEGOVINA - Tags: POLITICS CIVIL UNREST CRIME LAW SOCIETY PORTRAIT)

ATTENTION EDITORS: PICTURE 07 OF 28 FOR WIDER IMAGE PACKAGE 'THE FORCE OF THE LAW'. TO FIND ALL IMAGES SEARCH 'ENFORCERS'