Obama urges Americans to tamp down inflammatory rhetoric

Confronting another killing of police officers, President Barack Obama on Sunday urged Americans to tamp down inflammatory words and actions as a violent summer collides with the nation’s heated presidential campaign. Obama said the motive behind Sunday’s killing of three officers in Baton Rouge, Louisiana, was still unknown. It was the latest in a string of deadly incidents involving law enforcement, including the police shooting of a black man in Baton Rouge and the killing of five