Many schools with encampments have also experienced counter-demonstrations by pro-Israel students, but UCLA has stood out for the intensity and persistence of pro-Israel protests.
Local television station KABC-TV estimated that 300 to 500 people were hunkered down inside the camp, while around 2,000 more had gathered outside the barricades in support
A scuffle over an attempt to take an Israeli flag from student led to violence.
SJP decries attempt to have their encampment disbanded.
LAPD was called in on Wednesday to restore order and maintain public safety.
Instagram user Eli Tsives shared footage of him showing his student ID to the activists, who repeated "We are not engaging" while blocking his attempts to walk to his class.
Lani Dawn said pro-Palestinian protesters told her and a Native American man that they couldn't speak to each other at the scene.
The US Department of Education is currently investigating UCLA for the antisemitism on its campus.
Livni had been scheduled to speak at Royce Hall, but chapters of the Students for Justice in Palestine at UCLA organized the protests to make "sure war criminals are NOT welcome on our campus!"
Those layers provide unmistakable evidence that soil sediments carried by water were deposited at Jerezo Crater and its delta from a river that fed it, just as they are in lakes on Earth.