From what I see and hear, the US is moving to the left in a similar way to gravity lifting objects from the ground.

As far as I can tell both sides have their intensely loud groups, but only noticing one means you're closer (by varying degrees) to the other. And that's OK, but slightly less OK if you're not aware of it.

Anyone who can't find the extremists in their own group should spend some time on self reflection.

It can also depend on where you are and who you know. The groups are not evenly spread through society. In the UK and one side in politics dominates all my social circles - colleagues, people I went to school with, people I meet locally (to be fair, that does depend on what you do and who you meet - but I tend to "cultural" activities), people who share stuff on FB that I know (as opposed to the stuff in the feed - is which often ridiculously extreme both ways).

it might not be true, and surveys and voting patterns say otherwise, but it can definitely feel like one side is dominant. It can definitely be true that a particular place/activity/group is dominated by one side, which is what GP seems to be claiming, rather than that the US in general has shifted to the left?

> but only noticing one means you're closer (by varying degrees) to the other.

Maybe if you're talking about culture in general it will exist as some sort of U shape in general terms no doubt, but any hyper online subcultures turned into an IRL organization/insular collection of people like defcon is liable to go hard in identifiable directions which is distracting to more disinterested parties there for the original purpose of the show.