My high school was in a shit neighborhood, and had a reputation for being violent, full of illegalities, and dangerous. When the media was engineering a societal panic over school lockdown drills, we were like "wait, those weren't just a thing for everyone? We've done them for decades...". Cops visited on a weekly basis, if not more often. Weird when you need to re-do the front entrance multiple times because of bullet hole damage... The rulers don't put in petty annoyance policies.