Do people in the quest for justice and equality sometimes take it too far? Yes, like blocking media from public spaces or the various things that happen on Tumblr. I have the feeling that the people who are most vehemently against the recent university protests see that in certain media outlets and form opinions without actually knowing what's going on for sure. This leads to righteous anger and unfounded stereotypes.
The idea of the "PC police" going around and telling white men what to do is an illusion. These protestors and organizers are not anti-white. They have a goal of justice and equality for everyone so they analyze the situation, find places where that isn't the case, and form an escalating plan of action to achieve their goal. Oftentimes, the media only captures the various movements at their most escalated stage, leaving people in the dark as to what's been tried before and giving the impression that they unfoundedly erupted out of nowhere.
Bottom line: the protests at Yale, Mizzou, Clare McKenna College vis-à-vis racism are not symptoms of a fragile, whiny, entitled, sniveling group of "crybullies". These are not the "oppression olympics" and being marginalized certainly isn't something people joke about. These protests and activist students (and I know many) are rightfully picking up where their forebears left off. If you're curious about their line of thinking, ask them. I promise, they'll appreciate it. Don't outsource that to the media and the talking heads.