DSP, serious post here from a guy who has been somewhat in your position (I got too wrapped up with a breakup like 6 six year, posted about it way too much on here and took ####, and did the whole threaten to leave thing - actually raffled it off and had 100 to leave which got trumped by someone actually paying me 101 to stay). Please consider the following points:
1. This board, for probably a myriad of unidentifiable reasons, is addicting. It's a bunch of like-minded guy who can speak their minds through the confines of a computer medium. For some of us, this board is a good outlet for some of us who have to act more conservative/quiet/humble/whatever due to our professional position. Conversely, it's easier to be more openly honest, and therefore more harsh than usual to people. It can get personal enough to make ayou want to leave, for some reason you can't. You aren't the first to do this threaten to leave spectacle and you won't be the last. And people will laugh at you. Stop. You want to stay, so get over being so sensitive.
2. While it's easy to use this board as essentially a diary, it's a public forum and doing so will come back to bite you. So far, in your short time here, you've given us every detail of your life, listed your real name, where you live, and your band name. If you don't slow this down it's inevitable that it will come back to bite you in your real life. When I was posting away about my ex, I stupidly released too much info, posted pictures of her and I, and got way too whiny. That led to the following god-awful real-life scenarios: 1) After some knucklehead photoshopped the head of my girlfriend from a picture I stupidly posted onto a very graphic gang bang porn scene, I had to explain to her upset father (who was a good guy) exactly what the hell led to him having to see it; and 2) I stupidly ignored the fact that one of my best friends frequented this board for fantasy football info and found all my pathetic threads, showed it to our group of friends (along with some girls I was close to) and I had to explain that away and had guys looking at me differently. None of that was worth whatever potential therapeutic benefit I got (if any) from being a ####### on a message board. Again, this is permanent and public. I seriously fear some of my stupid #### popping up if/when I ever run for public office, up for a judgeship, etc. You may not see the potential effect this could have on you now, but it'll pop up and you'll regret it.
3. The racism crap is terrible and has to stop. This board, while it has tons of members, is generally most frequented by guys with the economic and professional opportunity and freedom to be in front of a computer all day. While there are plenty of outliers and exceptions to the rule, generally the type of guy with that freedom is going to be well-educated. Well-educated people generally find racism to be dumb, irrational, awful, and that the person reflecting such views to lack any sort of intellectual credibility. In your case, while your life event sounded traumatic (although, on that aspect, seriously every one of us has had their heart broken to some extent, your story isn't that wild), it's a ####### terrible explanation for your racism. This isn't debatable. And you'll be viewed as a second class citizen until you change your view.
4. Once you do all this, this board can become beneficial and enjoyable. While this is a message board and people tend to be nastier to each other than usual and tend to joke a lot more, I've met probably a dozen plus people in real life here from this board and every single one was a very good guy. People have done some incredibly kind things to each other on here and some have even developed real-life close friendships and groups who get together on a regular basis. Additionally, once you stop narcissistically focusing on yourself, you can get a lot of great insight from guys on this board on a variety of topics. After all, this board has doctors, professors, physicist, film producers, and even enough lawyers to satisfy any lawyer joke you can think of. It's a good group you can benefit from chatting with, it's just a group that isn't, at least initially, going to give two ####s about your problems because, frankly, they aren't that bad.
So, relax, stop being so dramatic, tone it down a notch, and be normal. And for the love of God stop the irrational hatred of certain groups. It's such wasted energy.