Because Internet activism — particularly with the weird culture that seems to pervade Tumblr — isn’t about making a difference, or even raising awareness; it’s just about proving how superior the writer is to his or her audience. Tumbloggers (or whatever you call them) with blogs like Shutthefuckupsexists.tumblr.com or IWillLiterallyMurderYouIfYouMakeARapeJoke.tumblr.com aren’t actually trying to spread awareness or insights. They’re just trying to outdo each other, to win this weird competition that has nothing to do with anything but their own egos. They all want to find the new, more nuanced, more complicated social problem (“adult privilege” refers to the injustice that teenage voices aren’t valued, and “tall privilege” refers to fuck knows what) that no one else has heard of. They’re treating social issues the way hipsters treat bands: using the advantage of knowledge to make it painfully, irrefutably obvious that they are better than you.