I am confused, where exactly do you see this hostility? I thought the hacker community is welcome to everyone. In fact, i am not a white male. Most people i know aren't white males. A very large number of visitors of HN are probably not white males. But we're all respectful towards each other here. In fact of all the forums online, I actually find HN to be the least biased/racist/sexist. Just the other day, that post by Julia Evans about writing an OS received such positive feedback. I didn't see a single comment that discredited her for being a female. In fact when one commenter accidentally called her a "he", he was put down by the others for his mistake, saying that it is very disrespectful to assume the poster of a Tech blog is a male by default.

So i don't see really what hostility you are pointing towards. Some examples would be welcome.