A man sleeps in a traffic policeman's booth on a hot summer day in Kolkata, India April 25, 2017. REUTERS/Rupak De Chowdhuri 

A man sleeps in a traffic policeman's booth on a hot summer day in Kolkata, India, April 19, 2016. REUTERS/Rupak De Chowdhuri 

A migrant child sleeps on a bench behind a Hungarian policeman at Keleti station in Budapest, Hungary September 9, 2015. REUTERS/Bernadett Szabo

An African migrant looks at a local policeman after arriving on a fishing boat at Las Carpinteras beach in the Canary Island of Gran Canaria, Spain, September 1, 2015. Around 60 people, including six women and a two-year-old child, were aboard the fishing boat, according to local authorities. Picture taken September 1, 2015. REUTERS/Borja Suarez 

An African migrant looks at a local policeman after arriving on a fishing boat at Las Carpinteras beach in the Canary Island of Gran Canaria, Spain, September 1, 2015. Around 60 people, including six women and a two-year-old child, were aboard the fishing boat, according to local authorities. Picture taken September 1, 2015. REUTERS/Borja Suarez 

A migrant rests as a Macedonian policeman stands guard at the Greek-Macedonian border, August 21, 2015. Macedonian police firing tear gas drove back crowds of migrants and refugees trying to enter from Greece on Friday, enforcing an emergency decree sealing the frontier to thousands of Syrians, Afghans and others trying to reach western Europe. The Balkan country declared a state of emergency on its northern and southern borders on Thursday after weeks of chaotic scenes at a border railway station inundated daily by up to 2,000 migrants and refugees crossing from Greece en route to Hungary and Europe's borderless Schengen zone. REUTERS/Alexandros Avramidis 

Capt. Ron Johnson of the Missouri State Highway Patrol carries sleeping Quinn Edwards, 4, after taking him from his father to put him on his UTV (L) as his father walked in a protest march in Ferguson, Missouri August 8, 2015. One year after the police shooting of an unarmed black teen thrust Ferguson into the national spotlight, the St. Louis suburb is bracing for a weekend of protests over continued complaints of police violence. REUTERS/Rick Wilking 

Capt. Ron Johnson of the Missouri State Highway Patrol carries sleeping Quinn Edwards, 4, after taking him from his father Frankie (in shorts next to Johnson) to put him on his UTV during a protest march in Ferguson, Missouri August 8, 2015. One year after the police shooting of an unarmed black teen thrust Ferguson into the national spotlight, the St. Louis suburb is bracing for a weekend of protests over continued complaints of police violence. REUTERS/Rick Wilking 

Capt. Ron Johnson of the Missouri State Highway Patrol carries sleeping Quinn Edwards, 4, after taking him from his father Frankie (in shorts next to Johnson) to put him on his UTV, during a protest march in Ferguson, Missouri August 8, 2015. One year after the police shooting of an unarmed black teen thrust Ferguson into the national spotlight, the St. Louis suburb is bracing for a weekend of protests over continued complaints of police violence. REUTERS/Rick Wilking 

Capt. Ron Johnson of the Missouri State Highway Patrol carries sleeping Quinn Edwards, 4, after taking him from his father to put him on his UTV (L), in a protest march in Ferguson, Missouri August 8, 2015. One year after the police shooting of an unarmed black teen thrust Ferguson into the national spotlight, the St. Louis suburb is bracing for a weekend of protests over continued complaints of police violence. REUTERS/Rick Wilking 

A policeman stands in front of a door of a train ready to go to Munich, Germany, as he blocks migrants without the proper documentation from getting on it, at Brenner railway station, Italy May 28, 2015. Some 200 mostly Eritrean migrants heading northwards from Italy were turned back by police in the Italian Alps on Friday and left sleeping in train stations as European countries tightened frontier checks before a global summit in Germany. Picture taken May 28, 2015. REUTERS/Stefano Rellandini 

A policeman sleeps onboard the Search and Rescue (SAR) ship KN Purworejo during a search operation for passengers onboard AirAsia Flight QZ8501 in the Java Sea January 4, 2015. Bad weather forced divers trying to identify sunken wreckage from the crashed AirAsia passenger jet to abort their mission on Sunday and Indonesian officials said they had not yet picked up any signals from the lost plane's "black box". The Airbus A320-200 crashed into the Java Sea about 40 minutes after taking off last Sunday from Indonesia's second-largest city Surabaya en route for Singapore. There were no survivors. REUTERS/Beawiharta (INDONESIA - Tags: DISASTER MARITIME TRANSPORT) 

French police prevent a group of migrants from jumping onto lorries on their way to the ferry terminal in Calais October 29, 2014. Roughly 2,300 immigrants, many of them from Africa, are roaming the streets and sleeping in makeshift camps in and around Calais while waiting to attempt the final leg of their bid to reach Britain, according to estimates from the local prefect's office. Britain and France have agreed to improve border controls and cooperate more closely in an effort to control a growing number of illegal immigrants trying to cross the English Channel from the French port city of Calais to Britain. REUTERS/Pascal Rossignol (FRANCE - Tags: SOCIETY IMMIGRATION POLITICS) 

A pro-democracy protester sleeps on a barricade as police stand guard behind him on a blocked road at Mongkok shopping district in Hong Kong October 18, 2014. Hong Kong pro-democracy activists recaptured parts of a core protest zone early on Saturday, defying riot police who had tried to disperse them with pepper spray and baton charges. REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST BUSINESS TPX IMAGES OF THE DAY) 

Police officers sleep as protesters (not pictured) block the main street to the financial Central district outside the government headquarters in Hong Kong, September 29, 2014. Riot police advanced on Hong Kong democracy protesters in the early hours of Monday, firing volleys of tear gas after launching a baton-charge in the worst unrest there since China took back control of the former British colony two decades ago. REUTERS/Carlos Barria (CHINA - Tags: CIVIL UNREST POLITICS TPX IMAGES OF THE DAY) 

Nigerian soldiers sleep after a training session during Flintlock 2014, a U.S.-led international training mission for African militaries, in Diffa, March 4, 2014. On a dusty training ground in Niger, U.S. Special Forces teach local troops to deal with suspects who resist arrest. The drill in the border town of Diffa is part of Operation Flintlock, a counter-terrorism exercise for nations on the Sahara's southern flanks that the United States organises each year. Washington's aim is to tackle Islamist militants in the Sahel region while keeping its military presence in Africa light. A growing number of European nations taking part shows their increasing concern about security in West Africa. Central to the international effort is a blossoming relationship between the United States and France, the former colonial power and traditional "policeman" of the turbulent region. Picture taken March 4, 2014. To match Analysis AFRICA-USA/SECURITY REUTERS/Joe Penney (NIGER - Tags: MILITARY POLITICS) 

Police and firefighters rescue a homeless man in Zagreb March 31, 2013. A night of heavy rain raised the water level of the river Sava and trapped the man who was sleeping under the bridge, according to eyewitnesses. REUTERS/Antonio Bronic (CROATIA - Tags: SOCIETY ENVIRONMENT) 

An Afghan police officer takes a nap during a graduation ceremony at the interior ministry in Kabul July, 17, 2012. Five hundred and thirty-five police officers graduated in Kabul on Monday. REUTERS/Mohammad Ismail (AFGHANISTAN - Tags: CRIME LAW SOCIETY) 

Peru's police officers are seen during the arrival of the coffins of soldiers Juan Navarro and Constantino Ramos and policeman Lander Tamari at an airport in Lima, April 15, 2012. Peru's Shining Path early on Saturday released 36 gas pipeline workers it took hostage six days ago in a remote jungle region in southern Peru, the government said, saying security forces had clashed with the rebels. Navarro, Ramos and Tamari were killed in the clashes in Cuzco. The Defense Ministry said the rebels let the workers go before dawn after they were circled by 1,500 security agents and tried to flee, in a victory for President Ollanta Humala, who fought the group while in the army in the 1990s. Officials said the hostages were safe and in good health. REUTERS/Enrique Castro-Mendivil (PERU - Tags: POLITICS MILITARY CIVIL UNREST) 

Sanford City Manager Norton Bonaparte, Jr., (R) and acting Police Chief Darren Scott (L) walk past a sleeping protestor after a group of protestors shut down Sanford Police Headquarters in Sanford, Florida, April 9, 2012. Florida State's Attorney Angela Corey announced Monday that she would not use a grand jury in the investigation of the death of Trayvon Martin. Martin, 17, was shot and killed by volunteer neighborhood watch captain George Zimmerman on February 26, sparking protests from civil rights groups. REUTERS/David Manning (UNITED STATES - Tags: CRIME LAW CIVIL UNREST) 

Homeless man Leonard Canagi, 33, (L) discusses with a policeman as he refuses to go to a community shelter in Bucharest February 1, 2012. Local police and authorities are trying to relocate homeless people to community shelters where they can sleep and eat as temperatures dropped to as low as -30 degree Celsius in some parts of Romania where 14 people died in the snap cold. Record-low temperatures in parts of Eastern Europe pushed the death toll from Arctic conditions to at least 89 people on Wednesday, and have forced Russian gas provider Gazprom to warn over supplies to Europe. REUTERS/Radu Sigheti (ROMANIA - Tags: ENVIRONMENT SOCIETY POVERTY) 

Homeless man Leonard Canagi, 33, (L) shows a policeman his improvised shelter inside a run-down building as he refuses to go to a community shelter in Bucharest February 1, 2012. Local police and authorities are trying to relocate homeless people to community shelters where they can sleep and eat as temperatures dropped to as low as -30 degree Celsius in some parts of Romania where 14 people died in the snap cold. Record-low temperatures in parts of Eastern Europe pushed the death toll from Arctic conditions to at least 89 people on Wednesday, and have forced Russian gas provider Gazprom to warn over supplies to Europe. REUTERS/Radu Sigheti (ROMANIA - Tags: ENVIRONMENT SOCIETY POVERTY) 

A local policeman looks for homeless people at a run-down building in Bucharest February 1, 2012. Local police and authorities are trying to relocate homeless people to community shelters where they can sleep and eat as temperatures dropped to as low as -30 degree Celsius in some parts of Romania where 14 people died in the snap cold. Record-low temperatures in parts of Eastern Europe pushed the death toll from Arctic conditions to at least 89 people on Wednesday, and have forced Russian gas provider Gazprom to warn over supplies to Europe. REUTERS/Radu Sigheti (ROMANIA - Tags: ENVIRONMENT SOCIETY POVERTY) 

Homeless man Aurel Zugravu, 42, talks with a policeman after picking through garbage bins in Bucharest February 1, 2012. Local police and authorities are trying to relocate homeless people to community shelters where they can sleep and eat as temperatures dropped to as low as -30 degree Celsius in some parts of Romania where 14 people died in the snap cold. Record-low temperatures in parts of Eastern Europe pushed the death toll from Arctic conditions to at least 89 people on Wednesday, and have forced Russian gas provider Gazprom to warn over supplies to Europe. REUTERS/Radu Sigheti (ROMANIA - Tags: ENVIRONMENT SOCIETY POVERTY) 

N.Y. police officers receive instructions as they stand near protesters sleeping at Zuccotti park, where they are camping out, before demonstrating outside the New York Stock Exchange (NYSE) September 21, 2011. Protesters marched to Wall Street on the fourth day of protests as they call for action against big businesses and politics. REUTERS/Eduardo Munoz (UNITED STATES - Tags: POLITICS BUSINESS CIVIL UNREST) 

Wisconsin Department of Natural Resources officers walk past a sleeping protester in the Wisconsin State Capitol rotunda as they walk to their checkpoints in Madison, Wisconsin March 10, 2011. Dozens of protesters flooded the Capitol building following a vote approving restrictions on collective bargaining by public employees, which Governor Scott Walker has insisted are needed for the state and local governments deal with projected budget gaps. REUTERS/Allen Fredrickson (UNITED STATES - Tags: POLITICS CIVIL UNREST EMPLOYMENT BUSINESS) 

Anti-government protesters sleep in a tent erected on a pavement, where protesters were camping outside Sanaa University February 28, 2011. Tens of thousands of protesters demanding the end of Saleh's 32-year rule of Yemen joined demonstrations on Monday, while skirmishes in the south killed three soldiers and a policeman.REUTERS/Ammar Awad (YEMEN - Tags: POLITICS CIVIL UNREST) 

An Iranian refugee with his mouth sewed lies on a pavement in front of a policeman near the United Nations High Commissioner for Refugees (UNHCR) in Athens December 27, 2010. Police removed refugees who have been living in tents for months outside the UNHCR offices. Some of the refugees were on hunger strike demanding their asylum applications not to be rejected. REUTERS/Yiorgos Karahalis (GREECE - Tags: POLITICS CIVIL UNREST IMAGES OF THE DAY) 

A policeman patrols near a sleeping crack user in the part of Sao Paulo's Luz neighborhood known as Cracolandia (Crackland), March 27, 2010. After 30 years of heavy drug trafficking and abuse in the district, Sao Paulo City Hall is implementing a program to clean up Crackland but the problem is only worsening. Picture taken March 27, 2010. REUTERS/Fernando Donasci (BRAZIL - Tags: POLITICS CRIME LAW SOCIETY) 

A policeman patrols near a sleeping crack user in the part of Sao Paulo's Luz neighborhood known as Cracolandia (Crackland), March 27, 2010. After 30 years of heavy drug trafficking and abuse in the district, Sao Paulo City Hall is implementing a program to clean up Crackland but the problem is only worsening. Picture taken March 27, 2010. REUTERS/Fernando Donasci (BRAZIL - Tags: POLITICS CRIME LAW SOCIETY) 

A policeman sleeps at the back of a truck in front of anti-government protesters' barricade in the main financial district in Bangkok May 5, 2010. Anti-government protesters held their ground on the streets of Thailand's capital on Wednesday and said they would stay there until Prime Minister Abhisit Vejjajiva set a date for dissolving parliament. Protest leaders, who had demanded an immediate election, have agreed to enter into a reconciliation process proposed by Abhisit to end a two-month-old crisis but take issue with a proposed Nov. 14 poll date. REUTERS/Jerry Lampen (THAILAND - Tags: CIVIL UNREST MILITARY POLITICS) 

A policeman sleeps in front of a barricade built with bamboo poles and tyres at an intersection to Silom Road financial district in Bangkok May 3, 2010. Thailand's prime minister warned anti-government protesters on Sunday there was a risk of "losses" if they did not get out of a Bangkok shopping district they have closed for a month, but the protesters vowed to stay put. REUTERS/Chaiwat Subprasom (THAILAND - Tags: POLITICS CIVIL UNREST IMAGES OF THE DAY) 

A policeman yawns as his colleagues take nap inside the parliament compound in Jakarta March 3, 2010. Indonesia's parliament looks set to recommend a criminal investigation of two top reformers in President Susilo Bambang Yudhoyono's cabinet over their role in a bank rescue, party statements on Wednesday showed. Finance Minister Sri Mulyani Indrawati and Vice President Boediono, pro-market technocrats, have been at the centre of a parliamentary inquiry into the 2008 bailout of Bank Century. REUTERS/Beawiharta (INDONESIA - Tags: POLITICS CIVIL UNREST IMAGES OF THE DAY) 

Police officers walk past a homeless man sleeping on a street in front of the Seoul railway station March 19, 2009. South Korea said on Thursday it would spend $3.5 billion out of a planned extra budget to create 550,000 jobs as the economy heads into its first recession in more than a decade. REUTERS/Jo Yong-Hak (SOUTH KOREA BUSINESS) 

Shi'ite pilgrims wave to an Iraqi policeman as they return to Baghdad after attending a religious rite in Kerbala February 16, 2009. Exhausted after days of sleeping rough, thousands of Iraqi Shi'ite pilgrims neared the end of a major rite on Monday, and prepared for long treks home during which they might again be vulnerable to attack. REUTERS/Thaier al-Sudani (IRAQ) 

A police officer sleeps at a field used as temporary refuge for earthquake survivors, early morning in Fraijanes January 13, 2009. The final death toll in Costa Rica from a 6.1 magnitude earthquake last week will likely rise to around 40 after an emergency official on Monday scaled back the number of people missing. REUTERS/Juan Carlos Ulate (COSTA RICA) 

An Indian police office takes an afternoon nap inside a police van next to guns in front of Nariman House, a Jewish centre in Mumbai December 1, 2008. Nariman House, which had housed a Jewish centre on a small street close to ritzy hotels and a railway station, was one of the locations that Islamist gunmen had stormed and occupied in militant attacks last week that lasted over three days and caused the deaths of nearly 200 people. REUTERS/Jayanta Shaw (INDIA) 

A policeman photographs inside a Greyhound bus about 20 km (12 miles) west of Portage la Prairie, July 31, 2008. A man sleeping on a Greyhound bus as it rolled across the Canadian Prairies was killed and decapitated by his seatmate on Wednesday night, other passengers on the bus told the media. REUTERS/Fred Greenslade (CANADA) 

A policeman photographs the scene around a Greyhound bus about 20 km (12 miles) west of Portage la Prairie, July 31, 2008. A man sleeping on a Greyhound bus as it rolled across the Canadian Prairies was killed and decapitated by his seatmate on Wednesday night, other passengers on the bus told the media. REUTERS/Fred Greenslade (CANADA) 

A policeman photographs the scene around a Greyhound bus about 20 km (12 miles) west of Portage la Prairie, July 31, 2008. A man sleeping on a Greyhound bus as it rolled across the Canadian Prairies was killed and decapitated by his seatmate on Wednesday night, other passengers on the bus told the media. REUTERS/Fred Greenslade (CANADA) 

A policeman photographs the scene around a Greyhound bus about 20 km (12 miles) west of Portage la Prairie, July 31, 2008. A man sleeping on a Greyhound bus as it rolled across the Canadian Prairies was killed and decapitated by his seatmate on Wednesday night, other passengers on the bus told the media. REUTERS/Fred Greenslade (CANADA) 

A policeman photographs the scene around a Greyhound bus about 20 km (12 miles) west of Portage la Prairie, July 31, 2008. A man sleeping on a Greyhound bus as it rolled across the Canadian Prairies was killed and decapitated by his seatmate on Wednesday night, other passengers on the bus told the media. REUTERS/Fred Greenslade (CANADA) 

Police cover up the front windshield of a Greyhound bus about 20 km (12 miles) west of Portage la Prairie, July 31, 2008. A man sleeping on a Greyhound bus as it rolled across the Canadian Prairies was killed and decapitated by his seatmate on Wednesday night, other passengers on the bus told the media. REUTERS/Fred Greenslade (CANADA) 

A woman complains about unfairness while policemen try to keep order as thousands of people wait in line for more than 24 hours to buy Olympic tickets in Beijing early morning July 25, 2008. Unwashed, unfed and lacking sleep, thousands of Chinese queued for their last chance at the Olympic tickets on Friday, with police straining to hold back the crowds who threatened to break barricades. REUTERS/Jason Lee (CHINA) (BEIJING OLYMPICS 2008 PREVIEW) 

An injured policeman sits on the ground after he tried to drag away a man who was standing in line to buy Olympic tickets at a ticket office near the National Stadium, also known as the Bird's Nest, in Beijing July 25, 2008. Unwashed, unfed and lacking sleep, thousands of Chinese queued for their last chance at the Olympic tickets on Friday, with police straining to hold back the crowds who threatened to break barricades. REUTERS/David Gray (CHINA) (BEIJING OLYMPICS 2008 PREVIEW) 

Policemen push a man, who was standing in a line to buy Olympic tickets, to the ground before taking him away at a ticket office located near the National Stadium, also known as the Bird's Nest, in Beijing July 25, 2008. Unwashed, unfed and lacking sleep, thousands of Chinese queued for their last chance at the Olympic tickets on Friday, with police straining to hold back the crowds who threatened to break barricades. REUTERS/David Gray (CHINA) (BEIJING OLYMPICS 2008 PREVIEW) 

A policeman sleeps on a bus in central Minsk, January 21, 2008. REUTERS/Vasily Fedosenko (BELARUS) 

Iraqi policemen sleep in front of a police station in the town of Al-Mushahde, some 50 km (31 miles) north of Baghdad, early June 9, 2007. REUTERS/Goran Tomasevic (IRAQ) 

Police walk near a drunk resident during a crackdown on the Mungiki criminal gang in Nairobi's Mathare slum June 6, 2007. Kenyan police used whips and tear-gas to battle slum-dwellers on Wednesday in a crackdown on the Mungiki criminal gang, while a severed and skinned head was found in the same Nairobi neighbourhood, witnesses said. REUTERS/Antony Njuguna (KENYA) 

A policeman stands near a supporter of former Argentine soccer star Diego Maradona sleeping outside a Buenos Aires hospital where Maradona remains hospitalized March 29, 2007. Maradona was taken to a Buenos Aires hospital in an ambulance on March 28 after falling ill and was undergoing tests, the hospital said. REUTERS/Marcos Brindicci (ARGENTINA) 

Kids play on the street during the Carnival in Cadiz February 19, 2007. The Carnival will run until February 25. REUTERS/Marcelo del Pozo (SPAIN) 

A decertified Bosnian policeman sleeps behind a sign that reads, "Hunger strike until death!!! Or???", in an union building in Sarajevo December 13, 2006. Sacked policemen started a hunger strike to protest against an U.N. decision to decertify them, leaving them jobless. REUTERS/ Danilo Krstanovic (BOSNIA AND HERZEGOVINA) 

An Afghan policeman sleeps next to container with posters of candidates for the upcoming paliamentary elections in Bagram. An Afghan policeman sleeps next to a container with posters of candidates for the upcoming paliamentary elections in Bagram, on the outskirts of Kabul September 9, 2005. Parliamentary and provincial elections will be held on September 18, the last step of an international plan meant to restore democracy and stability to Afghanistan after 25 years of conflict, and nearly four years after U.S.-led forces ousted the Taliban. REUTERS/Zohra Bensemra 

A reveller sleeps with a pacifier in her mouth in a garbage filled garden during San Fermin festival in downtown Pamplona July 11, 2005. Pamplona's festival, famous for its bull run, attracts hundreds of thousands of visitors each year from all over the world. Four people, including an on-duty policeman, were gored by bulls on the fifth day of the bull-running festival in the northern Spanish city of Pamplona on Monday, officials said. REUTERS/Pablo Sanchez PSQ/SJS/CCK 

A Portugeese policeman walks past a fan sleeping on a train station plattform at Faro railway station in southern Portugal early hours June 13, 2004. Soccer fans staying in southern coastal towns of Portugal boarded the train on their way to attend EURO 2004 tournament matches played in Lisbon. REUTERS/Yiorgos Karahalis YK 

A U.S. soldier and Iraqi policeman search a room as an Iraqi child
sleeps on the bed during a joint raid by the 401 Military Police
Company of the U.S. army and the Iraqi police in Tikrit, about 110
miles (180 kilometres) northwest of Baghdad September 29, 2003. Fifteen
houses were searched and raided in an effort to capture Saddam Hussein
loyalists. Four persons were detained for questioning. REUTERS/Arko
Datta

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A U.S. soldier and Iraqi policeman search a room as an Iraqi child sleeps on
the bed during a joint raid by the 401 Military Police Company of the U.S.
army and the Iraqi police in Tikrit, about 110 miles (180 kilometres)
northwest of Baghdad September 29, 2003. Fifteen houses were searched and
raided in an effort to capture Saddam Hussein loyalists. Four persons were
detained for questioning. REUTERS/Arko Datta PP03110073 IRQI

AD/ 

A U.S. soldier and Iraqi policeman search a room as an Iraqi child sleeps on
the bed during a joint raid by the 401 Military Police Company of the U.S.
army and the Iraqi police in Tikrit, about 110 miles (180 kilometres)
northwest of Baghdad September 29, 2003. Fifteen houses were searched and
raided in an effort to capture Saddam Hussein loyalists. Four persons were
detained for questioning. Pictures of the Year 2003 Pictures of the
month September 2003 REUTERS/Arko Datta

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A policeman stands outside the houses in Bolney Road, Brighton, where
six-year-old Summer Haipule lives (L) and was later found asleep under
a cot at a neighbour's (R) July 8, 2003. Police said Summer, who was
yesterday feared abducted, appeared to have spent the night sleeping
under a child's cot without the neighbours being aware she was at their
home. REUTERS/Peter Macdiarmid

PKM 

Indian policeman inspects the burnt out train carriage in Ludhiana, in
the northern Indian state of Punjab May 15, 2003. Fire killed 38 people
in a packed passenger train in northern India on Thursday, catching
many people in their sleep, officials and rescue workers said.
REUTERS/Ajay Verma

JSG/DL