Well you will see install a mod for the game called Vices and Sins MOD improves some things from the original title. But what I have noticed is that when I give the order to assault one of my hoods from the front I take a gun and shoot and this annoys me a lot because the police seem more. Well, the question resides in is it necessary to remove the weapon from a hood that has the knife or the fists high ???

mmm "vices and sins" mod? I don't think there are any mods for this game. Are you sure you're talking about Gangsters?

Regarding your question, if you're trying to assault someone that carries a gun, it will probably end up in a gunfight. Assaulting on the street is pretty useless :(, afaik.