Open House: NanaWall [Video]

The pro-Palestinian demonstration that paralyzed Columbia University ended in dramatic fashion, with police carrying riot shields bursting into a building that protesters took over the previous night and making dozens of arrests. On the other side of the country, clashes broke out early Wednesday between dueling groups at the University of California, Los Angeles.

Hundreds of NYPD officers acted after the schools president said there was no other way to ensure safety and restore order on campus and sought help from the department.

While some college administrators are negotiating with the protesters, others have been quick to call in law enforcement to end the demonstrations.

An encampment at Northeastern University is being cleared. Campus officials reported the use of "virulent antisemitic slurs."