@Meridis You're assuming everyone who steals has common sense, let me refer you to this:
https://www.youtube.com/results?search_query=worlds+dumbest+criminals
Just go through a few of the videos and people robbing an alarm clock store with active alarms starts making sense. Actually, they might not have known the mandrogas would scream hence their reaction.
@RagnMunkeez Well it makes sense, it's gonna be filled with children and a nun, how are they gonna stop a group of thugs?