Jeffrey Williams is pictured in this undated booking photo provided by the St. Louis County Police Department. Williams is the 20-year-old suspect in the shooting last week of two police officers during a protest rally in Ferguson, Missouri, has been arrested and charged with first-degree assault and gun violations, prosecutors said on March 15, 2015. Photograph: Reuters 1:16

A 20-year-old man was charged on Sunday with first-degree assault in last week’s shooting of two policemen during a protest rally in Ferguson, Missour(...)

Protesters demonstrate  across the road from  the police department in Ferguson, Missouri, on March 12th, the same day that two police officers were shot in the town. Photograph: Jim Young/Reuters

Racial anger bubbled over again in Ferguson, the troubled Missouri town plagued by violence since August, when two police officers were injured in a s(...)

Police stand guard moments after gun shots were fired outside the City of Ferguson Police Department in Missouri, early March 12th, 2015.  Photograph: Reuters. 1:16

Two police officers in Ferguson, Missouri, were shot and wounded in what officials called an ambush, in the latest spasm of violence arising from mont(...)

Ferguson police chief Thomas Jackson. Mr Jackson has resigned after a US justice department report found widespread racially-based abuses in the police department. Photograph: Whitney Curtis/The New York Times 1:24

The police chief of Ferguson, Missouri, has resigned following a scathing US justice department report that found widespread racially-biased abuses in(...)

A shocking set of racist emails sent by senior Ferguson law enforcement officials depict Barack Obama as a chimpanzee

A shocking set of racist emails sent by senior Ferguson law enforcement officials depict Barack Obama as a chimpanzee and characterise Michelle Oba(...)

 Police arresting a demonstrator protesting the killing of teenager Michael Brown on August 19th, 2014,  in Ferguson, Missouri, US. File photograph: Scott Olson/Getty Images

Police officers in Ferguson, Missouri, have routinely violated the constitutional rights of the city’s black residents, the US Justice Department has (...)

 A makeshift memorial at the spot where a homeless man was killed by  police  in downtown Los Angeles. Photograph: Paul Buck/EPA

Police officers shot and killed a homeless man in downtown Los Angeles on Sunday in a dramatic confrontation caught on video. Five officers grappled o(...)

Director of the Federal Bureau of Investigation James Comey: spoke candidly about race relations and the “disconnect” between black communities and US law enforcement. Photograph: Jim Watson/AFP/Getty Images

Federal Bureau of Investigations director James Comey used a speech at an American university to speak candidly about race relations and the “disconn(...)

Clare’s Patrick Donnellan tackles Conor O’Mahony of Tipperary. Photograph: Lorraine O’Sullivan/Inpho

Clare 0-16 Tipperary 0-15Tipperary, last spotted in that transcendent All-Ireland final series, returned to inter-county hurling in more earthy circum(...)

Police stand guard at a crime scene in the Bronx on Tuesday after two  New York plainclothes officers were shot and injured while responding to a grocery store robbery. Three suspects are being questioned. Photograph: Bebeto Matthews/AP

The widening rift between New York City mayor Bill de Blasio and city’s rank-and-file police officers over his police reforms and response to the kill(...)