Related: I believe it’s ok, given certain contexts, to speak broadly and crassly to people who expect that. It’s ultimately ineffective and therefore bad to come off as an pretenscious arrogant know-it-all, correcting everyone’s grammar and word choices and any ignorance they have. I see some students in the labor movement and wonder if they’re capable of expressing their knowledge to typical joe worker, without injecting French, German or Russian, or losing their temper at some unintentionally offensive ignorance. We’re speaking broadly to regular people, don’t alienate them with your academic knowledge.

That doesn’t mean never correct crappy things people say, you can and should, but pick your battles. A climate scientist once told me, being correct isn’t enough.