People who utilize a structured society, not a roving band of city-dwelling mercenaries?  There are many, many examples of bands of &#x27;citizens&#x27; subverting the legal system by taking justice into their own hands.  Often, they ended with lynchings.  We have police and a government because the protection of the people is the job of professionals who (usually) respect the rule of law, not random able-bodied men hunting down (possibly innocent) people through city streets.