Destroying or damaging property will not solve the problem, it is a band aid as most likely it will make the problem even bigger after the new antenna or coax is replaced/repaired. Besides it then makes the person who destroyed the property a law breaker.
If the op is a local, which it seems is the situation.
Kill him with kindness, thank him for every rude remark or off color statement he may make. Get all the ops in the area to play along with the game.
As soon as he finds out that his actions really do not get the results that he wants he will stop, or try something new.
Get his address, subscribe him to some religious magazines, put him on the mailing list of religious charitable organizations. Send all the churches in the area written invitations to visit his residence as a lost soul in need of saving.
When he starts his remarks again on the air ask him if he read that in one of the religious magazines you "know" he is receiving in the mail.
You know his address? County tax records will give you the information to find out who owns the property. If he is renting then get a petition up with signatures send it to the owner and inform the owner of how "his" tenant is violating the Federal Communications rules and regulations by such conduct. Felony? Violation of terms of lease agreement? The owner will probably have a discussion with his tenant quickly. Not to mention how poorly it will look allowing a tenant to continue with such activities.
Record his comments, record many minutes of it, copy it to a CD and then sit in front of his house in "his" neighborhood with the doors open or speakers in the back of the truck and play the CD of his remarks for all his neighbors to hear. Hope he does not have any kids in the yard when you start blasting "daddy" cussing on the radio.
Contact the county commissioner, they are elected officials and make your complaint known, let them listen to the recording, then ask them what can be done about it. Might be surprised at the results.
Their is alternatives to destroying or damaging personal property. Two wrongs do not make a right.