Protests

The vaguely worded update is raising alarm among First Amendment advocates concerned that it could be used to unconstitutionally curtail free speech.

Here's a look at how the scene at the University of Pennsylvania unfolded, in photos.

Penn had previously placed six students on a mandatory leave of absence for their role in the encampment.

An investigation is underway after the incident at the fraternity Alpha Epsilon Pi.

Further action is pending disciplinary investigations by Penn's Center for Community Standards and Accountability, a Penn spokesperson said.

Penn officials say there will be a "high level of security" at all Franklin Field gates and on the field inside the stadium for the May 20 graduation ceremony.

The encampment has tripled in size, with dozens of tents now set up on College Green.

Students and faculty, alumni, civil rights groups and some politicians allege that universities endangered public safety by calling in police in response to the protesters.

Democrats are treading cautiously over an internal divide about the campus demonstrations. Republicans, including David McCormick, are playing up their rivals’ disagreements.

Administrations at several schools have reached agreements with student protesters, pledging to take certain steps in exchange for the dismantling of encampments.

Forty-eight “heritage” trees have been cut down in the park’s former golf course to make way for athletic fields and courts.

About 485 registered nurses at St. Christopher’s Hospital for Children in Philadelphia are negotiating a new union contract with Tower Health.

After a tumultuous few weeks on campus, Columbia University is changing its graduation plans, canceling its main ceremony to focus on multiple school-specific celebrations.

Roseann "Chic" Canfora was among the May 4, 1970 protesters fired at by the Ohio National Guard. Nine were injured and four were killed — including her brother.

"World-class health care institutions have to pay world-class wages and offer their workers respect,” said one Philly City Council member.