LOS ANGELES (AP) — Police in riot gear massed on the UCLA campus and ordered a large group of pro-Palestinian demonstrators inside a fortified encampment to leave the area or face arrest late Wednesday, one night after violence instigated by counter-protesters erupted in the same place.

A small city sprang up inside the barricaded encampment, full of hundreds of people and tents on the campus quad. Some protesters said Muslim prayers as the sun set over the campus, while others chanted “we’re not leaving” or passed out goggles and surgical masks. They wore helmets and headscarves, and discussed the best ways to handle pepper spray or tear gas as someone sang over a megaphone.