Crickey are you an islamic fundamentalist or what ?
Despite what the pro gun lobby has to say about matters, you, I or anyone is not Judge & Jury & we have no right to go around shooting folks because we think they are doing something, innocent until
proven guilty & 'due process' etc, being something I think most would accept ..
Your city could of course think about putting taxes up to pay for more police & prisons (though I'll merrilly accept Prison doesn't wok most times for most prisoners & creates worse criminals usually) if thats what it takes, rather than introduce a situation where people might think you are doing something & shoot you for it, when you very well mightn't be...
You are all sounding remarkably like vigalanties !
& btw an interesting statistic is just how many American police get killed & hurt with their own weapons
This by way of example as I can't find a link to back me up, but the figure that sticks in my mind is 50% but that link clearly indicates the downside of introducing a gun in an effort to control matters ..