The students are protesting Israel's offensive in Gaza, which it launched after a Hamas attack on Oct. 7 that Israel says killed 1,200 people. Israel has killed over 34,000 people in retaliation, according to Gaza health authorities.

Of the 112 people arrested Tuesday in protests at Columbia, 29% were not affiliated with the school, New York City officials said. That breaks down to the arrests of 32 nonstudents and 80 students, Mayor Eric Adams and NYPD Commissioner Edward A. Caban said in a joint statement.

That last discussion was unsuccessful. Within hours, police had arrested dozens of people on burglary and trespassing charges, including at least 30 students, six alumni and two Columbia employees, and cleared out protest encampments that had spawned dozens of similar demonstrations at colleges around the world.