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 were peaceful.

Berkeley is a city on the eastern shore of San Francisco Bay in northern Alameda County, California, United States. It is named after the 18th-century Anglo-Irish bishop and philosopher George Berkeley. It borders the cities of Oakland and Emeryville to the south and the city of Albany and the unincorporated community of Kensington to the north. Its eastern border with Contra Costa County generally follows the ridge of the Berkeley Hills. The 2020 census recorded a population of 124,321.