I wouldn't call this the same fashion of tribalism though. Not at all.
The far right are fascists.
This kind of tribalism is more akin to the Russian invasion of Ukraine: I have a boatload of Russian friends here in Jersey. And a boatload of Ukrainian friends. Some who are even both Russian AND Ukrainian (ex-wife for starters).
The Russian contingent was wrapped up in their own world (listening to Russian radio and TV on cable, etc.; and therefore wrapped up in Putin's propaganda world...); when Russia invaded in 2014 all my Russian friends said to my Ukrainian friends "We're going to SAVE you from the EVIL WEST!!!"; and all my Ukrainian friends responded with "GET THE **** OUT OF OUR COUNTRY!!!". A lot of hurt feelings/ friendships since that time.
This isn't left or right, even if it is politicians also engaging, with most of them on the left. It's just not the same. It's a different kind of tribalism. I mean, how can you say "LEFT" when most Jewish-Americans (not all, by far) vote Democrat? It just doesn't make sense to say "It's the far left" when it's NOT.