The 2017 Berkeley protests were a series of protests and clashes between organized groups that occurred in the city of Berkeley, California, in the vicinity of the University of California campus. Violence occurred predominantly between protesters opposed to then-President Donald Trump, including activists such as antifa groups and socialists; and pro-Trump groups such as Republicans, members of the alt-lite and alt-right, neo-Nazis, and white nationalists. The majority of the participants on both sides were people who wanted to listen to the speakers peacefully, and peaceful protesters against the speakers. The first event occurred on February 1, when Trump supporter Milo Yiannopoulos was scheduled to give a speech at the university. Two later incidents on March 4 and April 15, were pro-Trump rallies met by protesters. Another rally occurred on April 27, hosted by Kyle "Based Stickman" Chapman, Brittany Pettibone, Lauren Southern, and others at Martin Luther King Jr. Civic Center Park. This was scheduled after a planned speech by Ann Coulter was canceled. A "Say No to Marxism" rally planned to be held in the same park on August 27 was officially canceled by the organizers, but still drew both Trump supporters and protesters. Protests and clashes continued into the month of September, with a campus visit from conservative radio host Ben Shapiro and the return of Yiannopoulos for "Berkeley Free Speech Week". Security for the September events, though "Free Speech Week" was officially canceled by the organizers, cost the university hundreds of thousands of dollars. Timeline February 1 On February 1, Milo Yiannopoulos was scheduled to make a speech at the University of California, Berkeley at 8 p.m. Prior, more than 100 UC Berkeley faculty signed a petition urging the university to cancel the event. Over 1,500 people gathered on the steps of Sproul Hall to protest the event. The protest had been a non-violent, student gathering until a group of 150 black bloc protesters slowly entered the crowd and interrupted the protest. The interrupting protesters claimed to be antifa activists and members of the left-wing group By Any Means Necessary. The group of interrupting protestors set fires, damaged property, threw fireworks, attacked members of the crowd, and threw rocks at the police. Within twenty minutes of the start of the violence, the Yiannopoulos event was officially canceled by the university police department due to security concerns, and protesters were ordered to disperse. The interrupting protesters continued for several