HN weeds out/flags a massive number of topics very quickly. Especially political topics that lead to flame wars. It also weeds out the unnecessarily argumentative posters pretty quickly.

But at the same time because of this there are some that say that this limits conversations and topics that can be discussed on HN. So, no you can't make everyone happy, but you can attempt to at least make the atmosphere pleasant.

I agree. HN has a strong moderation policy against trolling and other awful behavior. Forums that aren’t as moderated as HN don’t tend to last as long, or at least don’t tend to maintain this level of civil communication.