I luck out, most of my neighbors are pretty awesome. Some aren’t, but they keep to themselves and I keep to myself if there’s no reason to interact. If we do interact it’s always as polite and friendly as possible.
Here’s an older blog about some terrible neighbors.
What that family went through is not right - in my opinion. They reported it to the police, tried to get a restraining order, but it didn’t stop the taunts and threats.