A civil rights investigation has started in the US after a video emerged of a black man being shot dead by two white police officers.
Hundreds of people have been protesting against the shooting dead of Alton Sterling in Louisiana.
Mr Sterling's family is calling for the police chief to step down.
Authorities say they were called to a shop in Baton Rouge in Louisiana on Tuesday, after reports someone had seen Mr. Sterling with a gun.
The 37 year old had five children.
