I'm sorry, I can't really remember any specific links to discussions, and I don't really know exactly who believes in what ideas, but I feel like there are a lot of people here, and especially people who show up in the comments, who believe that certain races are inherently more or less intelligent/violent/whatever on average than others. I specifically remember nyan_sandwich saying that he believes this, calling himself a "proto-racist" but that's the only example I can recall.
The "reactionary" philosophy is discussed a lot here too, and I feel like most people who subscribe to this philosophy are racist. Mencius Moldbug is the biggest name in this, I believe. Also I've seen a lot of links to this site http://isteve.blogspot.com/ which seems to basically be arguing in favor of racism. This blog post http://slatestarcodex.com/2013/03/03/reactionary-philosophy-in-an-enormous-planet-sized-nutshell/ contains a discussion of these issues.
The one basically follows from the other, I think. This isn't a reactionary site by any means; the last poll showed single-digit support for the philosophy here, if it's fair to consider it a political philosophy exclusive with liberalism, libertarianism, and/or conservatism. However, neoreaction/Moldbuggery gets a less hostile reception here than it does on most non-reactionary sites, probably because it's an intensely contrarian philosophy and LW seems to have a cultural fondness for clever contrarians, and we have do have several vocal reactionaries a...
A few notes about the site mechanics
A few notes about the community
If English is not your first language, don't let that make you afraid to post or comment. You can get English help on Discussion- or Main-level posts by sending a PM to one of the following users (use the "send message" link on the upper right of their user page). Either put the text of the post in the PM, or just say that you'd like English help and you'll get a response with an email address.
* Normal_Anomaly
* Randaly
* shokwave
* Barry Cotter
A note for theists: you will find the Less Wrong community to be predominantly atheist, though not completely so, and most of us are genuinely respectful of religious people who keep the usual community norms. It's worth saying that we might think religion is off-topic in some places where you think it's on-topic, so be thoughtful about where and how you start explicitly talking about it; some of us are happy to talk about religion, some of us aren't interested. Bear in mind that many of us really, truly have given full consideration to theistic claims and found them to be false, so starting with the most common arguments is pretty likely just to annoy people. Anyhow, it's absolutely OK to mention that you're religious in your welcome post and to invite a discussion there.
A list of some posts that are pretty awesome
I recommend the major sequences to everybody, but I realize how daunting they look at first. So for purposes of immediate gratification, the following posts are particularly interesting/illuminating/provocative and don't require any previous reading:
More suggestions are welcome! Or just check out the top-rated posts from the history of Less Wrong. Most posts at +50 or more are well worth your time.
Welcome to Less Wrong, and we look forward to hearing from you throughout the site!
Note from orthonormal: MBlume and other contributors wrote the original version of this welcome post, and I've edited it a fair bit. If there's anything I should add or update on this post (especially broken links), please send me a private message—I may not notice a comment on the post. Finally, once this gets past 500 comments, anyone is welcome to copy and edit this intro to start the next welcome thread.