I had a female student a few years ago who was complaining about the sexism of the themed parties at one fraternity (e.g. "red light", where the girls were supposed to dress as hookers, "pimps n hos", same story, ...). Knowing that she was in a sorority, I asked whether her sorority sisters shared her opinion---"more or less", she said.

Now, there were only a few sororities at this small school, and they collectively included close to 20% of the female student body (and a higher proportion of the party-going female students). So I suggested getting with the other sororities and boycotting any party with a sexist theme. Those parties would shut down SO FAST.

Her response was, "we've thought about that, but if we don't go to their parties, what else would we do?" There's a lot packed into that question. I didn't have an immediate answer then, and that whole conversation has stuck in my mind and comes to the fore whenever I read an article like this.

This isn't a problem that can be solved from above.