Nonsense. Trespass is deliberate interference with another person's property right. Does a hand print or chalk mark prevent someone from making use of his car? The answer is obviously no.
So you can vandalize my car with chalk all you want as long as it doesn’t violate my possessory interest?
Isn't vandalism different from trespass?
Vandalism is a form of trespass.
If you want your car to remain in pristine condition, keep it in your garage. Don't park it in a public space. In a shared space undesirable things happen. Just because you object to something doesn't make it a crime. Guilty mind plus guilty deed make something a crime.