We need to be talking about the political implications of what we've built, and figuring out how to fix our mess. This is like the period before the hurricane: everyone should be busy boarding up windows, and you can't do that if you decide you're just not going to talk about the coming storm because it makes you feel bad.
And yet, teaching people new things tends to affect the world more than political discussion ever could. I'm happy that HN exists as a solace from the political storm the rest of the world is wrapped up in.
Of course politics will affect each of us. But as tptacek is fond of saying, HN can't be all things to all people. It's more important to preserve the spirit of the site than to affect change. (In fact, it seems like one comes at the cost of the other.)
Let's not pretend that we can talk about the current political spectrum with anything near the certainty and information we have about Nazi Germany, the economic policies that were involved at the time, the propaganda used, and the world events at the time.