And homosexuality and same-sex marriage really are cases where what once seemed like hothouse ideas and assumptions — an expansive definition of homophobia, a dismissal of traditional arguments as sheer bigotry — first took hold college campuses and then won over the entirety of elite culture. The mood and norms and taboos around these issues that predominated when I attended a certain prominent Ivy League college back in the early 2000s are the moods and norms that now predominate just about everywhere that counts. So even if they’re mistaken about how to apply the lessons of their victory, I think it’s very natural for left-wing activists, on campus and off, to see that trajectory as a model for how other cultural victories might be won.

This relates to the point I made last week, in my ongoing series of Charlie Hebdo-related posts, describing a left-wing tendency similar to the one that Chait critiques. The reason some on the left look to our present taboos around anti-Semitic and white supremacist speech as models for how other issues around race and religion and sex and identity should (or shouldn’t, more aptly) be debated is precisely because those taboos really are powerful, really do work. Not always and everywhere, sometimes they backfire and encourage people to act out and rebel … but mostly they create very strong incentives to tread very carefully around anything that might be construed as a racist or anti-Semitic foray or idea.

So if you feel absolutely certain that you have a similar justice on your side on other issues, if your primary mission is to ensure that your definition of “expanded freedom” triumphs, why wouldn’t you use the levers of coercion available to you? If you know that your opponents are in error, and that their errors are at least on the same continuum with the errors of segregationists, why would you want to give them oxygen and space?