When they unironically say “based” or use “Marxist” or positively (multiple of my teachers have done this, I’m super lucky to live in a relatively non hell hole part of the US). Also when they say “communist” positively or talk about how they like Cuba (my peers have done these). A more subtle way is if they talk about dialectics or “people’s history.”
Also, the way you’d pick me out is my “toadal commie” shirt, my “death to amerikkka” shirt, my baret with a red star on it, or my Lenin pin on my backpack. That’s by looks, assuming you haven’t heard how I always talk about communism whenever I get the chance.
Edit: almost forgot the pro-union/Sankara/antifa stickers and patches.
I would say people of all political persuasions say "based," and unfortunately neither "Marxist," "communist," nor "Cuba" seems to guarantee they aren't just a leftcom or similar adjacent variant.
If I say someone with a "death to amerikkka" shirt, I would push old grannies over to talk to them.
The one who said “based” also made clear his favorite streamer is Hasan. He also complimented my Mao computer background. The one who mentioned Marxism and people’s history has a Sankara sticker among others. The one who positively mentioned communism im not 100% sure about. Last year someone complimented my baret and said they were reminded of Che (who’s great and I should learn about him if I didn’t already). We talked about music and the daily show and stuff. I wish i talked with him more before he graduated. I almost forgot, one of my teachers made an assignment specifically about Marxism and didn’t flinch when I praised Stalin.
I made the shirt this 4th of July and wore it to the independence potluck thing. No one mentioned it except my mom’s based friend who I talked about books with.
I forgot to mention, I first realized he was a Hasan fan after he said “based” when he said “it’s joever” and that that’s what his favorite streamer says.
There’s not much a difference, I just know I don’t have a little button or whatever at the top of mine. My star is either felt which I pin or a pin of baby Lenin (you can buy it from Etsy, thank you Lady Izdihar).