Two USC commencement speakers are boycotting their speaking engagements to protest the university's cancellation of a valedictorian's graduation speech.

Pro-Israel and pro-Palestinian demonstrators clash Sunday at UCLA, one day after protests erupted again at USC, where 93 people were arrested last week.

Dozens of LAPD squad cars were seen Saturday night driving onto the USC campus, where protesters are gathered in support of Palestinians in Gaza.

The University of California has rejected calls for divestment from Israel and an academic boycott of the Mideast state, two demands driving the current wave of pro-Palestinian campus protests.

How USC's controversial decision on Asna Tabassum's valedictorian speech led to nearly two weeks of campus tension with 93 arrests and a canceled 'main stage' commencement.

At USC, police in riot gear arrested 93 pro-Palestinian protestors, while UCLA sent in observers who kept their hands off students in a peaceful encampment.