TIL in 1971, an activist group wanted to break into an FBI office to steal draft records. They knew they couldn't pick the lock, so they left a note on the door that said, "Please don't lock this door tonight." It worked.

https://boingboing.net/2014/02/05/social-engineering-the-fbi-in.html
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1g5vi8d/til_in_1971_an_activist_group_wanted_to_break/