Tit for tat is a good tactic, usually. There is something to be said for a chilling effect, or "intimidation", as a way to not just punish current behavior but to forestall future escalation. The only key is that it needs to be selective, and not permanent, and then extremely reversed when they switch to cooperation.

They preach hate, you destroy their landscaping and signage. They remove your memorial and you burn down their building.
Meanwhile you praise the episcopal church and very visibly support fundraisers by the united Methodist Church.

It only alienates the people who were already too far gone. Others will tut at the disproportionate response but agree to the middle ground of "it's self defense, so it's justified in principle".

Gotta shift the center somehow.