The family that lived next door to my parents for most of my childhood were religious nutjobs. (As far as I know, it wasn't any specific branch of Christianity - I think they started as Russian Orthodox, but they were well above and beyond anything I've seen otherwise. This was cult-level nonsense) They were always going on about how something or other was evil and they kept offering my mom videos on the evils of various things. E.g. my sister wore a troll doll shirt, and they gave my mom a video on how troll dolls were a type of devil worship. They had 3 kids. The two youngest kids used to write bible verses on the side of their house in chalk. They didn't send their kids to the local public schools because, evil - needless to say, they weren't super popular in the neighborhood.
Of course, since Halloween was all about devil worship, they didn't decorate/give out candy/ToT. They would alternate between hiding in their basement and taking their kids to Chuck E Cheese. (No idea why that qualified as wholesome, Jesus-approved fun.)
My dad always said that one day, one of them would snap, and you'd see our house on the news with snipers on the roof, guns trained on the neighbors' house.
Fortunately we never made it to that point, and they moved out sometime while I was a sophomore in college.
Junior year of college, a bunch of friends and I were going to a house party on Halloween and had driven out to the mall near my parents' house to shop for costume stuff. We stopped by my parents' to bum dinner, and I was super excited to see that the new owners of nutcases' house were decorated for Halloween.
I was like, I may never have this opportunity again, so I threw on my costume, ran next door and ToT at the house. My parents were amused.