This is the one that came to mind for me too. In North America and Europe, Facebook skews older, and older people tend to be relatively moderate-right.

Gab is certainly "far right", but that doesn't mean those views are uncommon. Centrist viewpoints have shrunk, pulling what was previously considered "far" viewpoints into the mainstream. I think it's undeniable that a website where many (most?) of the userbase would advocate against the peaceful transition of power in the US should be labelled "far right".

> Gab is certainly "far right", but that doesn't mean those views are uncommon.

I don’t think anyone said those views were uncommon, just that they were far right.

Facebook is a bunch of bubbles. If yours skews right that says more about your friends and acquaintances than it does about Facebook in general.

I think you'll find this experiment really interesting: https://twitter.com/facebookstop10?lang=en

Facebook, like reddit, is a group of groups. /r/ukraine is very, very different from /r/russia and /r/news has nearly nothing to do with /r/conservative.

Then why is /r/politics such a left echo chamber?

Because mods permit that.