There's some trending story on FB about a couple with a Hell-beast bumpersticker who claim their dog was shot and the car (Or something) vandalized. Democrats being what they are, it wouldn't surprise me if their dog was shot for killing the neighbor's chickens and they vandalized whatever was damaged just to get in the news, frickin' Progs do that kind of shit all the damn' time.
It wouldn't surprise me if your guess were correct. Nor would it surprise me if their claim were true. That kind of @#$% is being done by people on both sides, though even in less partisan sources I've seen the perps seem to be more
CHILL-people than Trump-people. I'm sure that if cars bearing Trump stickers were parked in SF or Berserkeley or Oakland or Santa Cruz, they would be vandalized in 24-48 hours. Cars bearing Hillary stickers could park pretty much anywhere hereabouts without fear of vandalism (theft, maybe, in some areas). That's been pretty much true since WJC's time, maybe Reagan's.
OTOH, organized and serious violence - more like what TMN professes to fear - to date has been one-sided, entirely AFAIK.