A frame grab from a video of police officers forming a line as they cordon off the site where a policeman allegedly shot a teenager at a gas station in Berkeley, St. Louis, Missouri Image: Leigh Maibes/EPA

An 18-year-old black man was shot and killed by police late on Tuesday at a gas station in a St Louis suburb near where unarmed teen Michael Brown was(...)

New York mayor Bill de Blasio (left) appealed for calm in the aftermath of the killing of two officers, who were gunned down as they sat in their patrol car. Photograph: Richard Perry/The New York Times

New York mayor Bill de Blasio sought to ease tensions with the city’s police force on Monday, calling for a suspension of protests against the use of (...)

Ismaaiyl Brinsley (28) is seen in an undated picture provided by the New York Police Department on December 21, 2014. 1:32

The gunman who murdered two New York City police officers in their squad car had a long criminal record, a hatred of police and the government and an (...)

A police officer outside Woodhull Hospital, New York,  as the bodies of two police officers who were shot in Brooklyn are removed from the hospital. Photograph: John Taggart/EPA

Hours after Ismaaiyl Brinsley shot a former girlfriend in Maryland on Saturday, he returned to New York, his place of birth, armed with a gun and harb(...)

Rev Al Sharpton (right) with Esaw Garner, Eric Garner’s widow, during a press conference at the National Action Network in  New York  yesterday. Photograph:  Michael Graae/Getty Images 1:32

One day after two New York City police officers were shot dead at point-blank range while sitting in their patrol car in Brooklyn, targeted apparentl(...)

A crime scene investigator examines the scene after two New York Police officers were shot dead in Brooklyn, New York on Saturday. The officers were shot and killed as they sat in a marked squad car in Brooklyn  New York Police Commissioner William Bratton said. Photograph: Reuters

A gunman shot dead two New York City police officers in what officials called an “assassination“. The incident occurred hours after a warning on socia(...)

A protester flees as police officers try to disperse a crowd comprised largely of student demonstrators during a protest against police violence in Berkeley, California, yesterday. Photograph: Noah Berger/Reuters

New York mayor Bill de Blasio on Sunday refused to endorse a grand jury’s decision not to indict a police officer over the choking death of a man i(...)

Thousands of protesters shout at police and fill the streets of Manhattan, angered by a New York City grand jury’s decision not to charge white police officer Daniel Pantaleo in the chokehold death of unarmed black man Eric Garner. Photograph: Adrees Latif/Reuters 1:49

Hillary Clinton has said the US criminal justice system is “out of balance” and she supports federal reviews of police-involved deaths of unarmed blac(...)

Dr Craig Spencer, who was diagnosed with Ebola last month, hugs New York mayor Bill de Blasio at the city’s Bellevue Hospital after being declared free of the disease. Photograph Spencer Platt/Getty Images

A New York doctor who has recovered from Ebola left the hospital today and urged support for US health workers treating patients in west Africa so t(...)

New York City mayor Bill de Blasio vowed to continue the policy of making low-level marijuana arrests. Now his administration is publicly embracing the notion that small-scale possession of marijuana merits different treatment. Photograph: Mike Segar/Reuters

The New York Police Department, which has been arresting tens of thousands of people a year for low-level marijuana possession, is poised to stop maki(...)