I stood my ground once against an awful neighbor. The neighborhood was a fishbowl and he already had a bad reputation that he wanted to pretend didn’t exist. My spouse and I put up a fence on the property line and nowhere else, which really embarrassed him. And at one point we figured out he was eavesdropping on us. I found out he had a record and so I started talking with my spouse in the room he eavesdropped on about getting a restraining order and about his record. It took about 3 months but he eventually packed up and left.