A demonstrator is pepper sprayed by riot police during a protest against Chile's government and the reopening of schools in Santiago, Chile, March 1, 2021. REUTERS/Ivan Alvarado

A police officer holds a pepper spray canister as he tries to disperse supporters of pro-democracy activists as they queue up for a court hearing over the national security law outside West Kowloon Magistrates' Courts, in Hong Kong, China March 1, 2021. REUTERS/Tyrone Siu

A riot police officer sprays pepper spray at a demonstrator during a protest against new government measures amidst the coronavirus disease (COVID-19, in La Paz, Bolivia, February 22, 2021. REUTERS/David Mercado

A demonstrator sprays pepper gas to riot police officers during clashes, as healthcare workers protest against new government measures amidst the coronavirus disease (COVID-19, in La Paz, Bolivia, February 22, 2021. REUTERS/David Mercado

A demonstrator sprays pepper gas towards riot police officers during clashes, as healthcare workers protest against new government measures amidst the coronavirus disease (COVID-19, in La Paz, Bolivia, February 22, 2021. REUTERS/David Mercado

Police use pepper spray as they clash with protesters during a rally against corruption and COVID-19 restriction measures in Nicosia, Cyprus February 13, 2021. REUTERS/Yiannis Kourtoglou

Nigerian artist Olufela Omokeko sets up an exhibition of fresh pepper motive at a gallery in Iwaya, Lagos, Nigeria January 30, 2021. Picture taken January 30, 2021. REUTERS/Seun Sanni REFILE - CORRECTING TYPO IN SURNAME

General view of an exhibition of fresh pepper motive set up by Nigerian artist Olufela Omokeko at a gallery in Iwaya, Lagos, Nigeria February 1, 2021. Picture taken February 1, 2021. REUTERS/Seun Sanni REFILE - CORRECTING TYPO IN SURNAME

General view of an exhibition of fresh pepper motive set up by Nigerian artist Olufela Omokeko at a gallery in Iwaya, Lagos, Nigeria February 1, 2021. Picture taken February 1, 2021. REUTERS/Seun Sanni REFILE - CORRECTING TYPO IN SURNAME

Nigerian artist Olufela Omokeko sets up an exhibition of fresh pepper motive at a gallery in Iwaya, Lagos, Nigeria January 30, 2021. Picture taken January 30, 2021 REUTERS/Seun Sanni REFILE - CORRECTING TYPO IN SURNAME

Nigerian artist Olufela Omokeko sets up an exhibition of fresh pepper motive at a gallery in Iwaya, Lagos, Nigeria January 30, 2021. Picture taken January 30, 2021. REUTERS/Seun Sanni REFILE - CORRECTING TYPO IN SURNAME

Police gestures with a pepper spray can at activists during a protest after the inauguration of U.S. President Joe Biden, in Portland, Oregon, U.S. January 20, 2021. REUTERS/Lindsey Wasson

U.S. Capitol Police use pepper spray as a mob of supporters of U.S. President Donald Trump also use pepper spray against the police as they storm the U.S. Capitol Building in Washington, U.S., January 6, 2021. Picture taken January 6, 2021. REUTERS/Leah Millis

Someone from the crowd uses pepper spray as a mob of supporters of U.S. President Donald Trump storm the U.S. Capitol Building in Washington, U.S., January 6, 2021. Picture taken January 6, 2021. REUTERS/Leah Millis

A supporter of U.S. President Donald Trump reacts after being hit with pepper spray by law enforcement officers, during a protest against the certification of the 2020 presidential election results by the Congress, at the Capitol in Washington, U.S., January 6, 2021. Picture taken January 6, 2021. REUTERS/Jim Urquhart

A supporter of U.S. President Donald Trump sprays pepper spray at members of the Metropolitan police force during a "Stop the Steal" protest outside of the Capitol building in Washington D.C. U.S. January 6, 2021. Picture taken January 6, 2021. REUTERS/Stephanie Keith

A supporter of U.S. President Donald Trump reacts after being pepper sprayed by law enforcement officers at the U.S. Capitol during a protest against the certification of the 2020 U.S. presidential election results by the U.S. Congress, in Washington, U.S., January 6, 2021. REUTERS/Jim Urquhart

A police officer reacts after getting pepper sprayed during clashes with pro-Trump protesters during a rally to contest the certification of the 2020 U.S. presidential election results by the U.S. Congress, at the U.S. Capitol Building in Washington, U.S, January 6, 2021. REUTERS/Shannon Stapleton

Pro-Trump protesters gets pepper sprayed by police during a rally to contest the certification of the 2020 U.S. presidential election results by the U.S. Congress, at the U.S. Capitol Building in Washington, U.S, January 6, 2021. REUTERS/Shannon Stapleton

A protester reacts after getting pepper sprayed during clashes with Capitol police at a rally to contest the certification of the 2020 U.S. presidential election results by the U.S. Congress, at the U.S. Capitol Building in Washington, U.S, January 6, 2021. REUTERS/Shannon Stapleton

A protester is treated after getting pepper sprayed during clashes with Capitol police at a rally to contest the certification of the 2020 U.S. presidential election results by the U.S. Congress, at the U.S. Capitol Building in Washington, U.S, January 6, 2021. REUTERS/Shannon Stapleton

Police officers release pepper spray on pro-Trump protesters during clashes with Capitol police at a rally to contest the certification of the 2020 U.S. presidential election results by the U.S. Congress, at the U.S. Capitol Building in Washington, U.S, January 6, 2021. REUTERS/Shannon Stapleton

A pro-Trump protester reacts as police officers release pepper spray during clashes with Capitol police at a rally to contest the certification of the 2020 U.S. presidential election results by the U.S. Congress, at the U.S. Capitol Building in Washington, U.S, January 6, 2021. REUTERS/Shannon Stapleton

Police officers release pepper spray on pro-Trump protesters during clashes with Capitol police at a rally to contest the certification of the 2020 U.S. presidential election results by the U.S. Congress, at the U.S. Capitol Building in Washington, U.S, January 6, 2021. REUTERS/Shannon Stapleton

Police officers release pepper spray on pro-Trump protesters during clashes with Capitol police at a rally to contest the certification of the 2020 U.S. presidential election results by the U.S. Congress, at the U.S. Capitol Building in Washington, U.S, January 6, 2021. REUTERS/Shannon Stapleton

A protester is treated after getting pepper sprayed during clashes with Capitol police at a rally to contest the certification of the 2020 U.S. presidential election results by the U.S. Congress, at the U.S. Capitol Building in Washington, U.S, January 6, 2021. REUTERS/Shannon Stapleton

A protester reacts after getting pepper sprayed during a rally to contest the certification of the 2020 U.S. presidential election results by the U.S. Congress, in Washington, U.S, January 6, 2021. REUTERS/Shannon Stapleton

A protester reacts after getting pepper sprayed during a rally to contest the certification of the 2020 U.S. presidential election results by the U.S. Congress, in Washington, U.S, January 6, 2021. REUTERS/Shannon Stapleton

A protester reacts after getting pepper sprayed during a rally to contest the certification of the 2020 U.S. presidential election results by the U.S. Congress, in Washington, U.S, January 6, 2021. REUTERS/Shannon Stapleton

Capitol police releases pepper spray on a crowd of protesters during clashes at a rally to contest the certification of the 2020 U.S. presidential election results by the U.S. Congress, at the U.S. Capitol Building in Washington, U.S, January 6, 2021. REUTERS/Shannon Stapleton

A protester is helped after getting pepper sprayed during a clash with Capitol police at a rally to contest the certification of the 2020 U.S. presidential election results by the U.S. Congress, at the U.S. Capitol Building in Washington, U.S, January 6, 2021. REUTERS/Shannon Stapleton

A protester is helped after getting pepper sprayed during a clash with Capitol police at a rally to contest the certification of the 2020 U.S. presidential election results by the U.S. Congress, at the U.S. Capitol Building in Washington, U.S, January 6, 2021. REUTERS/Shannon Stapleton

A police officer releases pepper spray onto a crowd of protesters during a clash at a rally to contest the certification of the 2020 U.S. presidential election results by the U.S. Congress, at the U.S. Capitol Building in Washington, U.S, January 6, 2021. REUTERS/Shannon Stapleton

A police officer releases pepper spray onto a crowd of protesters during a clash at a rally to contest the certification of the 2020 U.S. presidential election results by the U.S. Congress, at the U.S. Capitol Building in Washington, U.S, January 6, 2021. REUTERS/Shannon Stapleton

An Israeli soldier uses pepper spray on a Palestinian demonstrator during a protest against Israeli settlements, in Halhul in the Israeli-occupied West Bank January 4, 2021. REUTERS/Mussa Qawasma

An Israeli soldier uses pepper spray as he grabs a Palestinian demonstrator during a protest against Israeli settlements, in Halhul in the Israeli-occupied West Bank January 4, 2021. REUTERS/Mussa Qawasma

Dana Parks reacts to being pepper sprayed in the face after Portland Police officers detained her on the street during ongoing protests against racial inequality and police violence in Portland, Oregon, U.S., July 26, 2020. Picture taken July 26, 2020. REUTERS/Caitlin Ochs

A Ukrainian law enforcement officers uses a pepper spray to restrain a demonstrator during a rally of entrepreneurs and representatives of small businesses amid the coronavirus disease (COVID-19) outbreak in Independence Square in Kyiv, Ukraine December 15, 2020. Entrepreneurs gathered to demand governmental support and to protest against restrictive measures introduced to curb the spread of the coronavirus. REUTERS/Gleb Garanich

A member of the far-right group Proud Boys is helped after being pepper sprayed at a march amidst protests against the results of the election, in Washington, U.S., December 12, 2020. REUTERS/Jim Urquhart

Police try to stop a woman as she uses pepper spray during a march in response to various pro-Trump rallies held throughout D.C., in Washington, U.S., December 12, 2020. REUTERS/Leah Millis

Police try to stop a woman as she uses pepper spray during a march in response to various pro-Trump rallies held throughout D.C., in Washington, U.S., December 12, 2020. REUTERS/Leah Millis

A counter protester reacts as police use pepper spray during a march in response to various pro-Trump rallies held throughout D.C., in Washington, U.S., December 12, 2020. REUTERS/Leah Millis

Police use pepper spray as they try to keep separates members of the far-right group Proud Boys from counter protesters during a march in response to various pro-Trump rallies held throughout D.C., in Washington, U.S., December 12, 2020. REUTERS/Leah Millis

Police officers use pepper spray aganist protesters during a demonstration in reaction to the death of Klodian Rasha, after he was shot dead during the country's overnight curfew, in Tirana, Albania, December 10, 2020. REUTERS/Florion Goga

Police officers use pepper spray as they stand guard in front of the prime minister's office during a protest in reaction to the death of Klodian Rasha, after he was shot dead during the country's overnight curfew, in Tirana, Albania, December 9, 2020. REUTERS/Florion Goga

A woman affected by pepper spray is attended to by others during a protest amid nationwide unrest following the death in Minneapolis police custody of George Floyd, at Lafayette Park near the White House in Washington, U.S., May 31, 2020. REUTERS/Jim Bourg/File Photo SEARCH "POY BLM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

Police use pepper spray as they try to disperse people gathering in front of the Casa Rosada presidential palace to mourn the death of soccer legend Diego Armando Maradona, in Buenos Aires, Argentina November 26, 2020. REUTERS/Ricardo Moraes

Police use pepper spray as they try to disperse people gathering in front of the Casa Rosada presidential palace to mourn the death of soccer legend Diego Armando Maradona, in Buenos Aires, Argentina November 26, 2020. REUTERS/Ricardo Moraes

Red peppers, seen in the warehouse of Food Bank of the Rockies, will be distributed to people in need in Denver, Colorado, U.S., November 25, 2020. Picture taken November 25, 2020. REUTERS/Kevin Mohatt

Humanoid robot "Pepper" brightens up the daily life of guests at the day care center of German welfare organisation Caritas as the spread of the coronavirus disease (COVID-19) continues in Erlenbach, 50 km south of Frankfurt, Germany, November 25, 2020. Picture taken November 25, 2020. REUTERS/Kai Pfaffenbach

A guest of the day care center of German welfare organisation Caritas follows the instructions of humanoid robot "Pepper" for his rehabilitation work out as the spread of the coronavirus disease (COVID-19) continues in Erlenbach, 50 km south of Frankfurt, Germany, November 25, 2020. Picture taken November 25, 2020. REUTERS/Kai Pfaffenbach

Humanoid robot "Pepper" brightens up the daily life of guests at the day care center of German welfare organisation Caritas as the spread of the coronavirus disease (COVID-19) continues in Erlenbach, 50 km south of Frankfurt, Germany, November 25, 2020. Picture taken November 25, 2020. REUTERS/Kai Pfaffenbach

A guest of the day care center of German welfare organisation Caritas follows the instructions of humanoid robot "Pepper" for his rehabilitation work out as the spread of the coronavirus disease (COVID-19) continues, in Erlenbach, 50 km south of Frankfurt, Germany, November 25, 2020. Picture taken November 25, 2020. REUTERS/Kai Pfaffenbach

Humanoid robot "Pepper" plays a memory game with a guest at the day care center of German welfare organisation Caritas as the spread of the coronavirus disease (COVID-19) continues, in Erlenbach, 50 km south of Frankfurt, Germany, November 25, 2020, Picture taken November 25, 2020. REUTERS/Kai Pfaffenbach

A guest of the day care center of German welfare organisation Caritas follows the instructions of humanoid robot "Pepper" for his rehabilitation workout as the spread of the coronavirus disease (COVID-19) continues, in Erlenbach, 50 km south of Frankfurt, Germany, November 25, 2020, Picture taken November 25, 2020. REUTERS/Kai Pfaffenbach

A police officer uses a pepper spray on demonstrators during a protest against the government's coronavirus disease (COVID-19) restrictions, near the Brandenburger Gate in Berlin, November, 18, 2020. REUTERS/Christian Mang

A man is affected after being pepper sprayed during a protest against election results, in Washington, U.S. November 14, 2020. REUTERS/Hannah McKay

A man is affected after being pepper sprayed during a protest against election results, in Washington, U.S. November 14, 2020. REUTERS/Hannah McKay

A man is treated after being pepper sprayed after a day of rallies and counter-protests, in Washington, U.S. November 14, 2020. REUTERS/Jim Urquhart