Allegations Surface on Twitter that Riot Police Ordered to ‘Stand Down’ in UC Berkeley Protests

University of California at Berkeley police guard the building where Breitbart News editor Milo Yiannopoulos was to speak Wednesday, Feb. 1, 2017, in Berkeley, Calif. A small group of people with their faces covered broke windows, hurled fireworks at police officers and threw smoke bombs, prompting UC Berkeley officials to cancel Yiannopoulos's talk Wednesday evening. (AP Photo/Ben Margot)