[Low D Flat]

I took him to be drawing an analogy with the frequency of rape and sexual assault that is the result of conspiracy between and participation of numerous fraternity members and that is explicitly or implicitly tolerated if not encouraged by the chapter as a whole.

Well, I'm looking at the whole quote, including the sentence it was responding to:

Until the behavior of fraternity brothers consistently changes, there will be no change in the public perception.

This issue, kind of like school shootings, kind of like terrorist attacks, etc., while real and while needing to be addressed is not nearly so pervasive as your above sentence would suggest. Fraternity chapters are not consistently places where women can expect to be raped. The problem is real, but let's not blow it out of proportion.

There's nothing there limiting the comparison to premeditated and chapter-sanctioned gang rape -- and I doubt many victims care whether the act was premeditated/sanctioned or not, anyway. Fraternity houses ARE consistently places where women are at risk of rape. So are parties in dorms. It's smart for women to view them as potentially dangerous and take certain precautions (buddy system, not putting down their drinks, etc.). That's nothing like a school shooting.