Police declare 'public safety emergency' during Michael Knowles appearance at Pitt protest.

Protests erupted during a debate about transgender rights at the University of Pittsburgh, with an "incendiary device" going off outside the O'Hara Student Center. The university closed buildings and reported a "public safety emergency" as the protest crowd grew. Police later described the device as a smoke bomb and firework. There were no reported injuries. More than 250 people protested outside the center as Daily Wire host Michael Knowles debated with libertarian journalist Brad Polumbo. The event called "Should transgenderism be regulated by law?" started around 7:30 p.m. The Intercollegiate Studies Institute sponsored the event, which was hosted by Pitt College Republicans.