Asklemmy

Mine is hands down - KiwiFarms.

They have gained a reputation as, rightfully, a hate forum. A forum where its userbase has not and will not grow out of their edgy teenager phase, thinking Hitler/Stalin is awesome and have 'humorous' spins on controversial issues.

They are responsible for being linked to a handful of suicides. Even services like Cloudflare have dropped them from protection.

Reddit is only bad because it is horribly mismanaged (simply because Spez doesn't care and loves to profit off of his chaos). But KiwiFarms is bad because they are a unified bunch of hate-filled people with the sole goal of spreading hell and misery on people they don't like if you so much gaze in their direction.

They pride themselves in free speech in that, they will use racial slurs and slang. Any word of course not allowed to be said on the surface web and even the fediverse, they're going to use. That's probably the only thing I even remotely agree with them on, is that censorship on the internet has grown very overboard and it is relieving to use some words unpunished whereas you're moderated and/or banned in moments for using some words.

I just don't approve of the spamming of racial slang/slurs though.

But man, talk about a bunch of riled up angry teenagers who've gotta take their anger and mischief out on the world simply because they never amounted to anything in life.