People gathered Saturday to mourn Charlie Kirk at a memorial set up near the main entrance of Utah Valley University. Kirk was killed Wednesday during an outdoor debate event on campus. Students who witnessed his assassination are reckoning with trauma and grief. Kirk, the CEO and co-founder of the conservative youth organization Turning Point USA, was a top podcaster, culture warrior and ally of President Donald Trump. He led an effort to remake the GOP’s get-out-the-vote effort in the 2024 election based on the theory there were thousands of Trump supporters who rarely vote but could be persuaded to do so. His killing Wednesday was the latest in a string of attacks on U.S. politicians that have targeted members of both major parties. Authorities announced Friday the arrest of 22-year-old Tyler Robinson in the killing of Kirk. The university has said there will be increased security when classes resume on Sept. 17.