Police in New York City have made some shocking discoveries after they cleared out hundreds of anti-Israel protestors from a city university.

Fox News reports that the NYPD is sharing signs recovered from the scene bearing terrorist slogans. On Friday, officers dismantled an “illegal encampment” at New York University, and cleaning crews were called in to remove the tents and belongings of the protesters. NYPD Deputy Commissioner of Operations Kaz Daughtry shared various photos of “inflammatory literature and signage” found at the protest.

“The NYPD proudly protects everyone’s right to free speech and peaceful protest,” Daughtry said in the post before sharing photos of the signs and placards found in the wake of the protest. One piece of literature found on the site explicitly calls for “Death to America” and “Death to Israeli real-estate.”

NYPD Chief John Chell spoke to reporters on Friday and confirmed that the NYPD had conducted two operations “at the request of school presidents,” including at New York University and The New School in New York. He confirmed that officers arrested 56 people, and there were no incidents. The police chief noted that “99%” of those arrested were students.

“You will not find a truce from us,” another sign said. “Enough with De-Escalation Trainings: Where are the Escalation Trainings!” added another.

On April 22, law enforcement officers intervened at NYU, arresting over 100 students participating in a demonstration supporting Columbia University students and expressing opposition to the conflict involving Israel, which is at war with Hamas. On Wednesday, May 1, Fox News correspondent Alexis McAdams reported from the campus that anti-Israel protesters had reinstated their encampment.