Protesters face off with police, as others try to block them during a rally in El Cajon, a suburb of San Diego, California on September 28, 2016, in response to the police shooting the night before. Protesters marched in a California town following the fatal police shooting of an unarmed black man said to be mentally ill, as local officials urged calm and pledged a full investigation. The victim, identified as Ugandan refugee Alfred Olango, 30, was shot on Tuesday in the San Diego suburb of El Cajon after police received an emergency call about a man behaving erratically and walking in traffic. AFP photo