As the march of the social justice warriors advances across colleges and universities across the nation today's quote of the day provides the explanation. It comes from the Letters to the Editor column of today's Wall Street Journal.
Remember when they started giving every kid a trophy? Those children are in college now.
An alternative explanation is that Obama's former campaign organization now called Organizing for America or OFA has been training every disgruntled group on a college campus in Alinskyite tactics. While this is probably the more realistic explanation, I prefer the "every kid gets a trophy" explanation myself.