Political labels on your vehicle can lead to negative actions. At work, someone with a Darwin fish had their car vandalized. It was justified by some (on our internal chat) as the fish was offensive. So, anyone can be a victim.
You take your chances. Gun sticks can lead to break ins - looking for guns. I was told that there was a wave of those in Austin, years ago on NRA cars.
It's more important to contact legislatures though.