I've trolled Reddit a few times out of boredom. I've said sexist, racist, anti-left, far-right stuff. I've gone the other direction; I've made posts where I say you can't be racist against whites, and posts where I censored the word 'wh*te.' I've gone all around the website being a hateful little shit, and let me tell you... if you ever really REALLY want to piss off Reddit, make fun of one of their favorite cartoons or video games. I have never gotten more shit in my life from Reddit than making fun of Pokemon or Avatar. It's their main weakness. They love them more than black lives, white lives, blue lives, all lives. Gay rights, women's rights, men's rights, incel's rights, radfem's rights... forget that.
Just pick the most pathetic, embarrassing-looking popular cartoon or video game, like Animal Crossing, and go nuts. It's great.