Matt Yglesias has a good theory on this. "My suspicion is that this is a weird tic of campus politics that has followed graduates into the professional arena w

Matt Yglesias has a good theory on this. "My suspicion is that this is a weird tic of campus politics that has followed graduates into the professional arena where they unconsciously started deploying it in less appropriate contexts. If you’re in a dorm at a fancy college and you can convince an administrator that something is racist, the administrator will probably put a stop to it. At the same time, “this is bad for poor people” just isn’t going to get you far as a campus argument. After all, these schools more or less openly auction off a number of admissions slots to wealthy donors (while, of course, practicing affirmative action to keep things diverse) so they can hardly take a hard line on class politics."