Kinda related to boundaries, certainly to neighbours over stepping the mark...
My next door neighbour set wire snares in his garden, because he didn't like our cats in his garden. One of the snares caught one of our cats around the neck as our cat jumped over his fence, out of his garden in to his nextdoor neighbour's garden. The snare was just long enough to hang our cat by its neck, dangling over the fence. Next door but one's young kids found our dead cat, needless to say they were horrified and very upset.
We had had numerous run ins with our next door neighbour previously, but this was the final straw. Reported to him to the RSPCA, they prosecuted him. He had 20 ready made wire snares in his garage when the police searched his house. The idiot pleaded not guilty to the charge, but was found guilty. His wife, who was the complete opposite of him, divorced him. He sold his house and moved away.