Speaking up would be a start. Being a voice of reason against a cacophony of malicious attitudes, as Rival was referring to in the thread about Social Conservatism. If people (particularly college students) aren't willing to discuss issues reasonably in an academic forum, then this should be pointed out. If all they can do is label people and throw out soundbites, then they reveal themselves as vacuous and shallow.
They're not the same as the 60s era hippies and Civil Rights marchers, since they had to have some kind of ethos to what they were doing. Plus, they really were fighting "the establishment" against huge odds, manifest opposition, and an intractable, bigoted society. As a result, they had to try harder - much harder - to gain the hearts and minds of the general public. Now that that battle has been largely won, the younger "SJWs" of today are trying to be copycats, but they don't have the same level of courage or moxie that their elder counterparts had. They have to have their "safe spaces," and while they're in their "safe spaces," they act like a bunch of spoiled kindergartners laughing about farting in class. They're making a mockery of serious issues that, at one time, people fought and died for.
This needs to be explained to them, if only they would listen.