I could be completely wrong too. My knowledge of gangs and related criminal activity is extremely limited. In any case fire is a very bad way of dealing with it.

Maybe we should campaign for the reintroduction of formal duels, so that criminals can kill each other in a calm and controlled environment that does not put the general public at risk. Although that could encourage betting on the results, and gambling tends to lead to more organized crime involvement, so maybe that would just make the problem worse.