Those suing say that police hid inside the MLK Student Union instead of protecting people from the violence perpetrated by black-clad demonstrators.
Berkeley police detained a suspect near the park.
Campus police have reported a rape at a UC Berkeley dorm on Durant Avenue in late October.
A 19-year-old from Oakland was charged last week with five felonies from four different cases in Berkeley that took place over just six weeks this fall.
The victim reported he was attacked from behind by a male suspect with a cane at Ellsworth and Durant.
UC Berkeley Police sent out safety tips Monday afternoon after a Sunday sighting in the hills.
The University of California Police Department is investigating an assault that left a 52-year-old man with a head injury Friday.
A 52-year-old man was attacked by a group of males Saturday at noon at People's Park, authorities report.
Authorities are looking for a man who tackled a Cal student while she was jogging Thursday evening, groped her and tried to take off her clothing on a Berkeley Hills trail.
An 18-year-old Cal student was punched in the face while trying to keep a pair of robbers from taking her laptop Tuesday, UC Berkeley authorities report.
In the past week or so, UCPD has put out community alerts about three robberies, an attempted robbery and an assault with a deadly weapon in Berkeley.
Police are looking for a group of three men after an 18-year-old UC Berkeley student was punched unconscious at a Cal dorm early Sunday morning.
1:34 p.m. "All clear given for Sproul Plaza and MLK/Student Union. Evacuation order lifted. Area can be re-entered."