This is going to fucking suck but I will not do my enemies’ work for them. I will not just roll over and fucking die.
We’re going into an era that demands intelligence and courage and compassion. Bring all three to the table when you engage with your community, and DO engage with your community. It’s past time to take off the kid gloves when it comes to protecting our most vulnerable members, and people on here tend to be the sort that are willing to do that. Be tactical and safe in your efforts going forward, and stand with imperfect allies even when you’d rather not. If someone isn’t as far left as you’d like, still watch their back and buy time for them to do the same for you — leftist infighting has cost us so goddamn much already.
Intelligence. Courage. Compassion.
If you aren't sure you can bring enough intelligence or enough courage to the table, then focus on bringing compassion; it's the least intimidating of the three skills to build up, and EVERYONE benefits from expressions of it.
And while you're contemplating compassion: there's no harm in being earnest or sincere, either. I know we're all Very Online and super into being Cool™ and ironic and whatnot, but—fuck it. The older I get, the more I realize that doesn't matter a damn bit. It's okay to be kind to people and mean it. It's okay to be compassionate and not worry that other people will think you're too much.
Care radically. Care wildly. We're going to need so much compassion, and the compassion you can give to the world is different than the compassion anyone else can.
(And if that sounds scary? Care a tiny little bit. Care on tiptoe. Because compassion isn't something you're born with—as @lynati said upthread, it's a skill you can build.)