I was recently called a "tankie," which apparently is now a Democrat / centrist insult for anyone to the left of Fetterman (or whatever passes for the "mainstream" Democrat these days).
I'm not American anyway, so whatevs, but it's been instructive and "interesting" (i.e., horrifying) watching the Dems shoot themselves in the foot, the crotch, the arm, and whatever other part they can reach, by isolating and stigmatizing those who, in theory, should be their allies. The party under Harris has marched to the right on just about every issue other than reproductive rights, and is utterly intolerant of anyone from the left who won't jump on the bandwagon.
The whole Chappell Roan thing was a case in point: she was dragged through the mud by hundreds of Democrats who were outraged because, despite admitting she'd be voting for Harris, she had serious reservations. She used the term "critical thinking" something like 4 times in her last video on the subject of politics, a quality that appears to be very much out of fashion in the US right now.
If Harris loses in November (and I'm increasingly thinking that is likely), I think that demonizing important parts of their own natural constituency (including Arab Americans in places like Michigan) is going to have played an important role.