General advice on offensive/rude/hate speech to all, as I don't know what particular post you refer to:
Speaking as one of the moderators on Travel-SE, I don't always follow up on everything written in chat, so it's possible we've missed that. If you don't want to point at a particular infraction publicly, you can get a moderator in a private chat room and point out what you think went wrong, and then we'll sort it out.
That being said, please remember a lot of context and sense gets lost without observing the speaker's body language and attitude. For example, a simple "I hate you" can be seen as both innocent and extremely offensive. A lot of it depends on the context, but also on cultural differences. It's best to assume that nobody is "out to get you" and they may be trying to tease you instead of outright confronting you. Myself, and I'm sure I'm not alone, tend to allow myself more leeway in terms of expression when talking with my friends, but I'd be blushing all over if I had to repeat the same things in a more civilized company. Understand people are different and "offensive" for one might be just "naughty" or "normal" for somebody else.
For us as moderators, we are tasked with determining the actual intent of a post that seems offensive, which for reasons I stated above, can be quite difficult. Personally, I rely on the community to self-censor itself instead of persecuting every single instance of a bad word somebody dropped in chat or as comment, and interfere very infrequently. I assume We Are All Adults Here (tm) and can tolerate some naughtiness being thrown our way -- it's a useful social skill anyway. The best you can do in this case is to just.. well, do nothing. Don't feed the trolls, as they say. Do not hesitate, though, to draw moderators' attention to irregularities and outright hate speech.
The main site and the comments are an entirely different matter, though, and we are much more strict on what is allowed or not.
TLDR:
- Not everybody is "out to get you"
- When spotting something that rubs you the wrong way, take a deep breath and truly figure out whether it's a teasing remark or an actual offensive post.
- Do not respond to trolling attempts