A female doctor from Brazil, after being fed up from burglars jumping over her fence and steal her belongings, tapped dozen of HIV-infected syringes atop her metal fence with a warning board saying, ”Wall with HIV positive blood. No trespassing.”
A Nova Scotia man broke into a ranch home, then fed the cats, did laundry, put out hay for the horses, took a shower, used the residents’ toothbrush and shaver, and wrote in their diary.
Someone in Colorado is breaking in to homes, stealing snacks namely Hot pockets and watching anime. He steals no cash or valuables only snacks.
In 1970 a protest group broke into a draft board office by slipping in during the day and taping a note on the door: “Please don’t lock this door tonight.” They returned that night to find that the staff had obediently left the office open.