Protesters, who have largely been non-violent, have disrupted events, occupied buildings and public spaces, erected encampments, and skirmished with counterprotesters, resulting in university leaders citing campus policy violations and calling in law enforcement to forcefully remove protesters. According to a CalMatters analysis, at least 567 people, many of whom are students and faculty, have been disciplined by their universities or arrested since the Palestinian militant group Hamas attacked Israel on Oct. 7, killing over 1,100 and sparking a counter-offensive by Israel that has killed 35,000 Palestinians.