BERKELEY, CA - FEBRUARY 1: People protest on February 1, 2017 in Berkeley, California. A speech by controversial Breitbart writer Milo Yiannopoulos, who was scheduled to speak at UC Berkeley, was cancelled after protesters and police engaged in violent skirmishes. (Photo by Elijah Nouvelage/Getty Images)

BERKELEY, CA - FEBRUARY 1: People protest on February 1, 2017 in Berkeley, California. A speech by controversial Breitbart writer Milo Yiannopoulos, who was scheduled to speak at UC Berkeley, was cancelled after protesters and police engaged in violent skirmishes. (Photo by Elijah Nouvelage/Getty Images)