This is exactly why people should not use their callsigns on forums, and not post pictures of license plates, serial numbers, etc. The argument that people shouldn't "hide behind screen names" is completely invalid, as there are many people that would love nothing more than to take advantage of you. Same goes for amateur radio vanity plates, using your callsign as a wifi name, etc.
On the same topic, those here that outfit their vehicles to look like LE by way of antenna setups should reconsider based on all of the threats being received by LE every day. The "enemy" (i'll leave it at that) would love nothing more than to kill as many LEO's as possible, and having a vehicle that looks somewhat like a police car puts a target on your back. It also tells everyone else "please vandalize my car".
I agree With your first paragraph and second. Not only does looking like a Leo vehicle or parole vehicle attract the vandals and make you target by those with issues against law, but like a recent ham I know it made him a target by Leo's saying he was trying to impersonate just due to antennas and they assumed it was him running around with old strobes which was another vehicle they assumed due to the antennas. I myself had antennas on my vehicle before once got vandalized pretty good. It's a risk most time you won't have problems. But it just takes that one time to change your opinion on it all.