Stop in for a cup of coffee

Man Tike that would irk me. Likely nothing you can do but at some point you would think general good ethics and good neighbor protocol would prevail?
The neighbor is a real ***. So many stories. I am going to go around and mark my property lines Thanksgiving. Won't help but I may try to do something to get it stopped. I was sitting in my yard around my campfire when the police showed up then the SWAT team and removed him from his house. He still gets to keep his guns.