A supporter of former Pakistani Prime Minister Imran Khan, walks with a riot shield used by the police, during a clash outside the federal judicial complex in Islamabad, Pakistan March 18, 2023. REUTERS/Akhtar Soomro 

Police officers cover with their riot shields as supporters of former Pakistani Prime Minister Imran Khan throw them stones during a clash outside Federal Judicial Complex in Islamabad, Pakistan March 18, 2023. REUTERS/Akhtar Soomro 

Police officers in riot gears stand guard behind the shield to avoid stones hurled by the supporters of former Pakistani Prime Minister Imran Khan, during clashes ahead of his possible arrest outside his home, in Lahore, Pakistan March 14, 2023. REUTERS/Mohsin Raza 

A sticker reading: "Increase salaries, not retirement age" is seen on the shield of a police officer in riot gear, as French workers on strike gather and block the entry of a fuel depot in protest against the French government's pension reform plan, in Haulchin, near Valenciennes, France, March 13, 2023. REUTERS/Pascal Rossignol 

A sticker reading: "Increase salaries, not retirement age" is seen on the shield of a police officer in riot gear, as French workers on strike gather and block the entry of a fuel depot in protest against the French government's pension reform plan, in Haulchin, near Valenciennes, France, March 13, 2023. REUTERS/Pascal Rossignol 

Riot police hold their shields as demonstrators march against the government's pension reform plan in Paris, France, March 11, 2023. REUTERS/Benoit Tessier 

Riot police officers hold painted shields as people take part in a protest to mark International Women's Day, in Mexico City, Mexico March 8, 2023. REUTERS/Quetzalli Nicte-Ha 

Riot police officers hold their shields during a demonstration against French government's pension reform plan in Paris, as part of the sixth day of national strike and protests, in France, March 7, 2023. REUTERS/Sarah Meyssonnier 

Soccer Football - Ligue 1 - RC Lens v Lille - Stade Bollaert-Delelis, Lens, France - March 4, 2023 Stewards seen holding riot shields in front of the RC Lens fans inside the stadium before the match REUTERS/Pascal Rossignol 

Riot police officers take cover behind a shield during an anti-government demonstration following the ouster of Peru's former President Pedro Castillo, in Lima, Peru January 26, 2023. REUTERS/Sebastian Castaneda 

Riot police officers take cover behind a shield during an anti-government demonstration following the ouster of Peru's former President Pedro Castillo, in Lima, Peru January 26, 2023. REUTERS/Sebastian Castaneda 

Riot police officers hold their shields amid anti-government protests after Peru's former President Pedro Castillo was ousted, in Lima, Peru January 23, 2023. REUTERS/Pilar Olivares 

A demonstrator holds a sign reading "Urgent! The closure of the Congress" as riot police officers hold their shields amid anti-government protests after Peru's former President Pedro Castillo was ousted, in Lima, Peru January 21, 2023. REUTERS/Pilar Olivares 

Riot police take cover behind their shields during the 'Take over Lima' march to demonstrate against Peru's President Dina Boluarte, following the ousting and arrest of former President Pedro Castillo, in Lima, Peru January 20, 2023. REUTERS/Sebastian Castaneda 

Riot police officers take cover behind their shields during the 'Take over Lima' march to demonstrate against Peru's President Dina Boluarte, following the ousting and arrest of former President Pedro Castillo, in Lima, Peru January 20, 2023. REUTERS/Pilar Olivares 

Sparks are seen as riot police officers take cover behind their shields during the 'Take over Lima' march against Peru's President Dina Boluarte, following the ousting and arrest of former President Pedro Castillo, in Lima, Peru January 19, 2023. REUTERS/Sebastian Castaneda 

Riot police officers take cover behind their shields during the 'Take over Lima' march against Peru's President Dina Boluarte, following the ousting and arrest of former President Pedro Castillo, in Lima, Peru January 19, 2023. REUTERS/Sebastian Castaneda 

Riot police officers take cover behind their shields during the 'Take over Lima' march against Peru's President Dina Boluarte, following the ousting and arrest of former President Pedro Castillo, in Lima, Peru January 19, 2023. REUTERS/Sebastian Castaneda 

Riot police officers hold their shields during the 'Take over Lima' march to demonstrate against Peru's President Dina Boluarte, following the ousting and arrest of former President Pedro Castillo, in Lima, Peru January 19, 2023. REUTERS/Alessandro Cinque 

Protesters cover behind makeshift shields as they face riot police during the 'Take over Lima' march to demonstrate against Peru's President Dina Boluarte, following the ousting and arrest of former President Pedro Castillo, in Lima, Peru January 19, 2023. REUTERS/Alessandro Cinque 

Protesters cover behind makeshift shields as they face riot police during the 'Take over Lima' march to demonstrate against Peru's President Dina Boluarte, following the ousting and arrest of former President Pedro Castillo, in Lima, Peru January 19, 2023. REUTERS/Alessandro Cinque 

Protesters cover behind makeshift shields as they face riot police during the 'Take over Lima' march to demonstrate against Peru's President Dina Boluarte, following the ousting and arrest of former President Pedro Castillo, in Lima, Peru January 19, 2023. REUTERS/Alessandro Cinque 

Riot police officers take cover behind their shields during the 'Take over Lima' march to demonstrate against Peru's President Dina Boluarte, following the ousting and arrest of former President Pedro Castillo, in Lima, Peru January 19, 2023. REUTERS/Alessandro Cinque 

Riot police officers take cover behind their shields during the 'Take over Lima' march to demonstrate against Peru's President Dina Boluarte, following the ousting and arrest of former President Pedro Castillo, in Lima, Peru January 19, 2023. REUTERS/Alessandro Cinque 

Riot police officers take cover behind their shields during the 'Take over Lima' march to demonstrate against Peru's President Dina Boluarte, following the ousting and arrest of former President Pedro Castillo, in Lima, Peru January 19, 2023. REUTERS/Alessandro Cinque 

Riot police officers hold their shields during the 'Take over Lima' march to demonstrate against Peru's President Dina Boluarte, following the ousting and arrest of former President Pedro Castillo, in Lima, Peru January 19, 2023. REUTERS/Sebastian Castaneda 

A police officer holds a riot shield, as activists protest against the expansion of the Garzweiler open-cast lignite mine of Germany's utility RWE, in Luetzerath, Germany, January 13, 2023. REUTERS/Christian Mang 

Riot police officers hold their shields during a march demanding the release of Luis Camacho, right-wing governor of opposition stronghold Santa Cruz, and political prisoners, in La Paz, Bolivia January 10, 2023. REUTERS/Manuel Claure 

Pink paint sits over a riot police member's shield during a protest to mark the International Day for the Elimination of Violence Against Women, in Mexico City, Mexico November 25, 2022. REUTERS/Quetzalli Nicte-Ha 

Riot police officers hold their shields during a protest against Peru's President Pedro Castillo and his government, in Lima, Peru November 20, 2022. REUTERS/Sebastian Castaneda 

A demonstrator holds a makeshift shield as he faces riot police officers during a protest against Peru's President Pedro Castillo and his government, in Lima, Peru November 20, 2022. REUTERS/Sebastian Castaneda 

Police officers hold their shields during a protest against Peru's President Pedro Castillo and his government, in Lima, Peru November 20, 2022. REUTERS/Sebastian Castaneda 

A demonstrator holds a makeshift shield as he faces riot police officers during a protest against Peru's President Pedro Castillo and his government, in Lima, Peru November 20, 2022. REUTERS/Sebastian Castaneda 

A demonstrator holds a makeshift shield as he faces riot police officers during a protest against Peru's President Pedro Castillo and his government, in Lima, Peru November 20, 2022. REUTERS/Sebastian Castaneda 

Riot police officers hold their shields during an anti-government protest amid a stalemate between the government of President Guillermo Lasso and largely indigenous demonstrators who demand an end to emergency measures, in Quito, Ecuador June 23, 2022. REUTERS/Adriano Machado 

A riot police officer holds a shield on fire during a protest in commemoration of the victims of the 2021 national strike, in Bogota, Colombia April 28, 2022. REUTERS/Luisa Gonzalez 

A riot police officer holds a shield next to a fire during a protest in commemoration of the victims of the 2021 national strike, in Bogota, Colombia April 28, 2022. REUTERS/Luisa Gonzalez 

Police officers form a wall using riot shields during a protest against Peru's President Pedro Castillo after he had issued a curfew mandate which was lifted following widespread defiance on the streets, as protests spiraled against rising fuel and fertilizer prices triggered by the Ukraine conflict, in Lima, Peru April 5, 2022. REUTERS/Alessandro Cinque 

Police officers form a wall using riot shields during a protest against Peru's President Pedro Castillo after he had issued a curfew mandate which was lifted following widespread defiance on the streets, as protests spiraled against rising fuel and fertilizer prices triggered by the Ukraine conflict, in Lima, Peru April 5, 2022. REUTERS/Alessandro Cinque 

Police officers hold riot shields during a protest after Peru's President Pedro Castillo imposed a curfew in the capital Lima, banning people from leaving their homes in an attempt to curb protests against rising fuel and fertilizer costs that have spread throughout the country, in Lima, Peru April 5, 2022. REUTERS/Alessandro Cinque 

A Los Angeles Rams fan adjusts his cap as Los Angeles County Sheriff's Department (LACSD) deputies stand guard with riot shields at a closed entrance to SoFi Stadium during Super Bowl LVI, in Inglewood, California, U.S., February 13, 2022. REUTERS/Bing Guan 

U.S. Capitol Police riot shields are seen near a door on the eve of the first anniversary of the January 6, 2021 attack on the U.S. Capitol, in Capitol Hill in Washington, U.S., January 5, 2022. REUTERS/Elizabeth Frantz 

Riot shields are positioned by a doorway at the U.S. Capitol building on the eve of the first anniversary of the January 6, 2021 attack on the U.S. Capitol in Washington, U.S., January 5, 2022. REUTERS/Evelyn Hockstein 

Riot shields are positioned by a doorway at the U.S. Capitol building on the eve of the first anniversary of the January 6, 2021 attack on the U.S. Capitol in Washington, U.S., January 5, 2022. REUTERS/Evelyn Hockstein 

Soccer Football - Europa League - Group D - Fenerbahce v Eintracht Frankfurt - Sukru Saracoglu Stadium, Istanbul, Turkey - December 9, 2021 Police with riot shields inside the stadium before the match REUTERS/Murad Sezer 

Police officers stand guard behind riot shields as demontrators protest for control of La Paz's coca market, in La Paz, Bolivia October 4, 2021. REUTERS/Claudia Morales 

Police officers stand guard behind riot shields during a protest by coca producers for control of the coca market, in La Paz, Bolivia September 29, 2021. REUTERS/Claudia Morales 

Riot police hold their shields during a protest over the Thai government's handling of the coronavirus disease (COVID-19) pandemic and to demand Prime Minister Prayuth Chan-ocha's resignation, in Bangkok, Thailand, September 27, 2021. REUTERS/Soe Zeya Tun 

Riot police members walk with shields during a protest for the government's handling of the coronavirus disease (COVID-19) pandemic, in Bangkok, Thailand August 13, 2021. REUTERS/Soe Zeya Tun 

Riot police hold up shields during a protest against Brazil's President Jair Bolsonaro, in Sao Paulo, Brazil, July 3, 2021. REUTERS/Mariana Greif 

U.S. Capitol Police officers depart with their riot shields and equipment down a circular staircase inside the Capitol after the conclusion of U.S. President Joe Biden's first address to a joint session of the U.S. Congress on Capitol Hill in Washington, U.S., April 28, 2021. REUTERS/Jonathan Ernst 

U.S. Capitol Police officers depart the Capitol with their riot shields after the conclusion of U.S. President Joe Biden's first address to a joint session of the U.S. Congress on Capitol Hill in Washington, U.S., April 28, 2021. REUTERS/Jonathan Ernst 

A United States Secret Service Agent carries a riot shield across the West Wing driveway at the White House in Washington, U.S., April 20, 2021. REUTERS/Tom Brenner 

A United States Secret Service Agent carries a riot shield across the West Wing driveway at the White House in Washington, U.S., April 20, 2021. REUTERS/Tom Brenner 

Police officers with riot gear and shields stand guard at the Brooklyn Center Police Department, days after Daunte Wright was shot and killed by a police officer, in Brooklyn Center, Minnesota, U.S. April 13, 2021. REUTERS/Leah Millis 

Women clash with police officers behind riot shields during a protest in support of Victoria Salazar, a Salvadoran woman who died after a Mexican female police officer was seen in a video kneeling on her back, in Mexico City, Mexico April 2, 2021. REUTERS/Raquel Cunha TPX IMAGES OF THE DAY 

Riot police have images of arrested protest leaders on their shields during a rally demanding their release and the abolition of Section 112 lese majeste law, outside the Government house in Bangkok, Thailand March 30, 2021. REUTERS/Chalinee Thirasupa 

Police officers walk behind riot shields during a protest against a newly proposed policing bill, in Bristol, Britain, March 26, 2021. REUTERS/Peter Cziborra 

Police officers stand behind riot shields during a protest against a newly proposed policing bill, in Bristol, Britain, March 26, 2021. REUTERS/Peter Cziborra TPX IMAGES OF THE DAY 

Riot police raise their shields as they restrain a demonstrator during clashes at an anti-government protest in Bangkok, Thailand, March 20, 2021. REUTERS/Chalinee Thirasupa