Yes. I visited /r/hermancainaward the other day becsuse I wanted to check it out, and I was stunned at how hateful the comments were against people who, sadly, had opinions that lead to their death.

I was sad that people could be so misinformed/misled, but the subreddit seemed genuinely happy that these people died. That sounds very much like a hate group to me, and I'd like to see it as banned as fatpeoplehate (which has hate in the damn name) was.

It's not about the subject of the criticism, it's how you go about it. These subreddit are toxic hate-pools, they aren't a force for good. They're reveling in the misfortune of others instead of trying to somehow help, and that's what makes them hate groups, not whether or not being fat or an antivaxxer is bad.