Donald Trump’s victory in the presidential election sparked protests across the nation Wednesday, with crowds marching through city streets, rallying at college campuses and staging walkouts at schools in an open disavowal of the president-elect.

Students at several Bay Area high schools got up from their seats in the middle of class and filed out. A throng of more than 1,000 young protesters gathered on the steps of Los Angeles’ City Hall, burning a giant Trump head in effigy and blocking traffic along Spring and 1st streets.