offends a portion or group of the public
They made some mealy-mouthed statement in support of free speech while doing all this, which is pretty funny because that term in their rules pretty much destroys the ability of any competitors to speak freely. One literally can’t say anything without offending a “portion” of the public. Of course they meant you can’t offend someone who is financially important to them, which is very much China. So meanwhile China is probably committing some Nazi-level atrocities, putting Uighurs in concentration camps and murdering them for their organs, but it would be “offensive” to talk about it, so…