Horrible next door neighbours, racist (made racist comments to my h etc), used to gather in the back garden and swear their heads off whilst smoking weed (all in front of little kids etc), called our Tesco delivery driver a "cunt" for parking over their drive for 5 minutes to unload our groceries, played loud techno music literally all day long.
Anyway, the following happened:
The mum of the group got laid off from the factory where she worked, didnt earn enough to stay in the property (it was a 4 bed fairly large house) ended up having to move into a grotty tiny flat in a really unpleasant part of town.
The son lost his job, his wife left him, and he's now single with limited access to his own kids whilst his ex swans about town with a new bloke every week.
We now have nice neighbours in their old house. I'm not "happy" that any of that stuff happened to them. However, I do think its karma- not in a woo woo sense but simply that if you act like a dick, it will have repercussions in ALL areas of your life. They reaped the consequences of the fact they were horrible people.