South Korean special police officers enter a subway station in Seoul, South Korea, during an anti-terror exercise as part of Ulchi Freedom Guardian, an annual joint military operation between South Korea and the US
Police fired tear gas and stun grenades at protesters on Monday in Ferguson, Missouri, after days of unrest sparked by the fatal shooting of unarmed black teenager Michael Brown by a white policeman
Tear gas rains down on a woman standing with her arms raised after a demonstration over the killing of teenager Michael Brown by a Ferguson policeman in Missouri.
Jeff J Mitchell/Getty Images
Police Scotland Fife pipe band take part in 2014 World Pipe Band Championships grade one qualifiers at Glasgow Green on Friday in Glasgow, Scotland
A policeman stands in al-Haram street in Cairo, Egypt, during clashes with Muslim Brotherhood supporters following a rally marking the first anniversary of a Cairo crackdown
Afghan security personnel investigate a damaged minivan which was hit by a remote controlled bomb on the outskirts of Kabul, Afghanistan on Tuesday
An Egyptian riot policeman secures a street in front of burning tyres thrown by supporters of Muslim Brotherhood movement during their rally to mark the first anniversary of the military ousting of president Mohamed Morsi on Thursday in Cairo’s Ain Shams district
Ishara S. Kodikara/AFP
Sri Lankan policemen stand next to their new motorcycles at a ceremony in Colombo, marking the official distribution of 279 high-powered units to traffic constables across the country
Newly recruited Iraqi volunteers, wearing police force uniforms, take part in a training session on Tuesday in the central Shia Muslim city of Karbala
Police officers from a Swat (special weapons and tactics) team take part in a survival drill in Qiannan prefecture, Guizhou province, southwest China
A man argues with police during a demonstration on Thursday in São Paulo, Brazil, demanding better public services and protesting against the money spent on the World Cup football tournament
Royal Canadian Mounted Police officers gather to attend the funeral of three fellow officers who were killed while on duty last week in Moncton, New Brunswick, after they responded to a call about an armed man. The gunman open-fired, killing the three and injuring two others
Protesters scuffle with police outside the closed entrance of Ana Rosa station during the fifth day of metro workers’ strike in São Paulo on Monday morning.
Israeli soldiers and border police detain a Palestinian during a protest in solidarity with prisoners on hunger strike, at Qalandia checkpoint near the West Bank city of Ramallah
Ron Ward/Moncton Times & Transcript/Reuters
Emergency response team members take cover behind vehicles in Moncton, New Brunswick, Canada. Three police officers were shot dead and two more were wounded, police said as they conducted a manhunt for a man carrying a rifle and wearing camouflage clothes
Kevin Frayer/Getty Images
Chinese paramilitary police stand guard near Tiananmen Square on Wednesday in Beijing. Twenty-five years ago on this day Chinese troops cracked down on pro-democracy protesters and in the clashes that followed scores were killed and injured.
A Brazil’s national football team fan talks with riot policemen outside their hotel ahead their friendly match against Panama during their preparation for the 2014 World Cup in Goiania on Tuesday
Bharatiya Janata Party (BJP) supporters are stopped from moving towards the office of Akhilesh Yadav, the chief minister of the northern Indian state of Uttar Pradesh, during a protest against the recent rape and hanging of two girls in Lucknow
Policemen of the “Choque” special unit pose during the presentation of security forces for the upcoming FIFA World Cup, in Flamengo beach in Rio de Janeiro on Friday.
Military policemen hold their weapons as they are surrounded by a mob during a confrontation between anti-coup protesters and military at the Victory monument in Bangkok