[dragonwriter]

> HN is full of middle/upper middle class programmers who works in well-developed countries. This is definitely a segment on the political spectrum.

No, it's not. While class and profession have some loose correlation to ideology, the class/profession combination you describe includes people from all over the political spectrum, including all of the ones you say are excluded from HN for this reason (whuch, contrary to your description, seem to be well represented; well, not overt bigots but HN moderation is aimed pretty directly against that, and perhaps merely Trump apologists, who may or may not be Trump voters.)

[bayonetz]

Sounds like an empirical question to me. I'd ante a moderate sum though that @chil's assessment is closer to the truth in terms of homogeneity of political leanings on HN and, if you could somehow measure it, that there is "...more groupthink than the people here would care to admit" on HN.