It is the only way to be sure . . .

Naw, with the gun buy back it will be easy to arm everyone in Chicago over the age of 70 with protection. Empty the nursing homes of all able bodied residences and give them lessons in fire arm safety to go along with the senior centers teaching Cane Foo. First hook the bad person around the neck then shoot the sucker, can be done from a wheel chair or in bed.
D.C. Spy museum showed a few Canes that could fire a few bullets out the bottom, one heck of a business opportunity here to sell to those that need a cane. Once the punks realise the old timers are off limits, then a good part of crime will go down.
Arm the youth with small cans of day glow spray paint, I believe a woman in a big city having someone stealing packages from her stoop caught the perps sprayed them, they were caught very fast. Banks put dye packets in money and it seems to work.
We have to outsmart the crooks, out think them and be ready to defend ourselves as we do not have a cop on every corner.