That was not really a good statement, plan or policy to release to the open public.
Once it is known there is not police response anything will go or happen, since they can get away after doing it.
They will target the ones who cannot afford the security, making shoppers unsafe to shop there, as well as employees and owners.

They need a marble dispenser, black and white rapid switching strobe light, mirrored walls and ear drum piercing surround sounds that ricochet about.
The last resort would be natural skunk scent direct to the face, full face doused.