Obviously destroying another person's property this way is a crime, and should be punished to the full extent of the law. No excuse for it. Here in Vermont, the state is seen as a "blue" bastion, but outside of the Burlington area there are a lot of much more conservative types, and even in Chittenden county you see a fair number of Trump or other conservative stickers. No one bothers anyone over it though; most folks kinda understand the impact of damaging someone's vehicle in a state where barely getting buy is pretty normal, and it seems every car has a plethora of issue stickers, sometimes contradictory.
But.
Free speech does have consequences, and political stickers that run counter to the local norms are pretty much guaranteed to cause issues. One reason I never, ever put stickers of any sort on any car I own. Well, that and I hate stickers in general on the paint and finish.