Stupid leftists vandalizing the property of self-righteous leftists is how I’d frame it. Calling the keying of a car terrorism trivializes that word, and is not necessary to highlight the pettiness, lawlessness and dysfunctionality of the leftist worldview.
Look to the motivation of the perpetrators. Finding your car keyed just because someone felt like it is different than targeting a specific brand. You would be foolish to live in fear of a random attack, but you would also be foolish to not have some sence of fear after being targeted. Instilling fear is something a terrorist craves. They are not your run of the mill vadalizers, they are terrorists of some degree.