This makes me wonder… are these Americans even trying to live their self-proclaimed leftist values?

This just feels like a post that's meant to brow-beat the left more than ask a question that's in anyway answerable.

Like… are any of these people at least trying to fight fascism, or are they mostly just sitting scared at their computers?

Your framing is an assumption and immediately dives into what people should do (as if they're not already).

I am not saying everyone needs to take up arms as an immediate first step to fight fascism, but there are SO many other things than can be done in your local community as a start. From planning mutual aid fundraisers, to volunteering with grassroots orgs, to forming neighborhood ICE watches to document kidnappings, to showing up to your municipal government meetings to try to stop the rise of state surveillance… Hell, even planning potlucks to share food and get to know like-minded people can be incredibly effective at offering opportunities for education and skill sharing.

Yes, people in my community are doing everything you describe here and more. People I know have been fighting for years and have suffered for it. I can't speak for other communities, but I'm sure they are on the same page.