The one mundane part of the shocking murder of Republican activist Charlie Kirk is that it happened on a college campus. Outside a few gang-dominated neighborhoods in cities like Chicago and L.A., the most common crime scenes in America are the nation’s colleges and universities. If President Donald Trump were going to send the National Guard to defend free speech and confront antisemitic violence, wouldn’t Columbia University and UC Berkeley be at the top of the list? News that a conservative speaker has been roughed up by a college crowd is barely news anymore. Jews blocked from walking to class...