We don't like the kinds of things that are posted in these threads, and we try to minimize how much day-to-day political rage fodder gets front page space. At the same time, we have to recognize that these are issues that people care a lot about, and if people find that HN is a better place to have these discussions than elsewhere, then maybe we're offering something worthwhile by having these discussions here when they're about major developments.
But the guidelines still apply and if people are attacking others and engaging in political/ideological battle, you can help us by flagging comments or emailing us at hn@ycombinator.com to let us know about the worst stuff you see.
We certainly wouldn't want HN to be like this forever (it's no fun to moderate, that's for sure). We'll keep doing what we can to move things in the right direction.