A summary of the global use of drones to keep people indoors:
https://www.france24.com/en/20200327-rise-of-the-drones-unmanned-vehicles-become-key-tool-in-coronavirus-battle
California police to use drones to patrol coronavirus lockdown
Paris Police use drones for surveillance of citizens who are not adhering to the confinement
Spain’s police are flying drones with speakers around public places to warn citizens on coronavirus lockdown to get inside
https://www.businessinsider.com/spanish-police-using-drones-to-ask-people-stay-at-home-2020-3