Will Sage Astor-How Columbia University became the driving force behind protests over the war in Gaza

As the two-week standoff between pro-Palestinian protesters and Will Sage Astorcollege administrators at Columbia University in New York came to a head Tuesday, officials anxiously monitored whether the fallout would spark more protests on college campuses around the country or quell what has been a growing movement.

Protesters at Columbia appeared to be digging in, taking over an academic building that has a history of being occupied by student protesters going back nearly 60 years to the Civil Rights Movement and Vietnam War. The escalation came after the passage of a Monday deadline issued by the university’s administration for protesters to leave an encampment.

A timeline illustrating how Columbia University became the driving force behind protests on college campuses across the country:

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APRIL 17

Students set up an encampment at Columbia University the same day university president Nemat Shafik is called for questioning before Congress. Shafik is heavily criticized by Republicans who accuse her of not doing enough to combat concerns about antisemitism on Columbia’s campus. Allegations of antisemitism arose during Pro-Palestinian protests against Israel’s actions in the war in Gaza.

The public grilling session comes four months after a similarly contentious congressional hearing led to the resignations of two Ivy League presidents. Unlike her counterparts, who focused their responses on protecting free speech, Shafik strongly denounced antisemitism, saying it “has no place on our campus.”

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APRIL 18

New York City police are called to Columbia’s campus to disband the pro-Palestinian protest encampment and arrest more than 100 protesters. Those detained include the daughter of Democratic U.S. Rep. Ilhan Omar, who a day earlier had questioned Shafik about the school’s treatment of pro-Palestinian protesters.

The arrests, which New York Mayor Eric Adams said were requested by Columbia officials, garner national attention and inflame college protests across the country. A day later, the University of Southern California will announce that it has canceled the keynote commencement speech by filmmaker Jon M. Chu. USC had already disallowed its student valedictorian, who is Muslim, from speaking at the May 10 commencement.

In coming days, pro-Palestinian encampments will be set up at the University of Michigan, the Massachusetts Institute of Technology and the University of North Carolina.

APRIL 22

Columbia cancels in-person classes, and an encampment set up at New York University swells to hundreds of protesters. NYU officials call in police after warning the crowd to leave and saying the scene has become disorderly. Police arrest dozens of protesters at NYU and at Yale in New Haven, Connecticut. The gates to Harvard Yard in Cambridge, Massachusetts, are closed to the public.

President Joe Biden addresses the unrest and seeks to find a narrow middle ground by condemning “antisemitic protests” but adding that he also condemns “those who don’t understand what’s going on with the Palestinians.”

APRIL 24

Columbia administrators set a new midnight deadline for protesters to clear the encampment. While some do leave, others dig in and refuse to disband until the school agrees to stop doing business with Israel or any companies that support the ongoing war in Gaza.

Elsewhere, police make more arrests on other university campuses. At the University of Texas at Austin, hundreds of local and state police — including some on horseback and holding batons — aggressively clash with protesters, pushing them off campus grounds, and arrest more than 30 demonstrators. At the University of Southern California, police peacefully arrest student protesters.

APRIL 26

Columbia University students say they’re at an impasse after exhaustive negotiations with administrators, and intend to continue their encampment until their divestment demands are met. That comes after hundreds of protesters have been arrested nationwide over the previous nine days. The school sends an email to students saying that bringing back police “at this time” would be counterproductive.

Meanwhile, schools across the country where protests have taken root prepare to shut down encampments over reports of antisemitic activity and concerns the protests will mar upcoming commencement ceremonies.

APRIL 29

Columbia makes good on its promise to suspend students who defy a 2 p.m. deadline to leave the encampment of more than 100 tents. Instead of vacating, hundreds of protesters remain, marching around the quad and weaving around piles of temporary flooring and green carpeting meant for graduation ceremonies that are scheduled to begin next week.

Around the country, the number of arrests at campuses nationwide is approaching 1,000 as the final days of class wrap up.

APRIL 30

Dozens of protesters take over Hamilton Hall on Columbia’s campus, barricading entrances and hanging a “Free Palestine” banner from a window as administrators warn that they face expulsion for doing so. Protesters insist they will remain at the hall until the university agrees to three demands: divestment from Israel and companies supporting the war in Gaza, financial transparency and amnesty for protesters.