There are some ground rules:

This is a group where first and foremost, people are encouraged to be happy to be themselves. So make posts expressing all kinds of things: Your sexual orientation, your values, your culture, the things you're a fan of, your problems, your religion, your political beliefs, anything.

Now having different opinions and expressing them is only human, but if you have different opinions, the main recommendation would be to make your own thread for your own beliefs, or to write a kindly, mature, and reasonable contradiction on the original thread. Yelling at people and using childish terms that indicate an inability to handle a different opinion like "circle-jerk" won't help express your opinion, much less help change other peoples' minds. All it would do is increase their determination and create dissent.

This is a free-speech to the near-maximum group, but there are some limits. There are multiple attitudes to homosexuality that are permitted. If you are gay and proud of it, or at least root for the team, that is an acceptable attitude. If you don't hate gay people but think that some of their actions or attitudes aren't good for them, that's fine too, just explain rationally and nicely. However, if your attitude is "God hates f@gs", this will not be encouraged. If anything, this sort of thing will be discouraged. Now, I think most of us here are pro-gay, so it likely won't come to any of this, but this is just an example. This group is about making people feel safe here, and hostility does nothing of the kind. Also, attacking other users is almost unacceptable. I'll discuss this with other administrators to further develop and define this ground rule.

However, if someone posts hostility, don't respond with hostility, because it generates more dissent; instead, downvote, and alert the other administrators.

Snobbery is also not encouraged here. So, no red-herrings, strawmen, deliberately misspelling your opponents' arguments, and general impertinence.

What warrants a ban? This is a group about being happy to be yourself and to handle other opinions well, so, actually, not much, except for creating enough dissent and generating far too much hostility.