Thousands of U.S. citizens have taken to streets in protest against the Dallas shooting that left five police officials dead.
An ambush began with gunshots that killed the five officers and sent screaming crowds scrambling for cover. It ended when a Dallas police bomb squad robot killed a gunman after negotiations failed.
Investigators identified the dead attacker as 25-year-old Micah Xavier Johnson of Mesquite, Texas, a military veteran who'd served in Afghanistan.
Police said they searched his home Friday afternoon and found bomb-making materials, ballistic vests, rifles, ammunition and a personal journal of combat tactics. Investigators are analyzing information in the journal, a police statement said.