Milo Yiannopoulos, the polarizing Breitbart News editor, speaks at California Polytechnic State University as part of his "The Dangerous Faggot Tour" of college campuses, Tuesday, Jan. 31, 2017, in San Luis Obispo, Calif. His scheduled visit Wednesday to the University of California at Berkeley has raised an issue facing campuses across America at the dawn of the Trump presidency: What is the line between free speech and hate speech? (David Middlecamp/The Tribune (of San Luis Obispo) via AP)