Do you think the American Cosa Nostra needs to start wacking people to regain some respect and power
Respect from who? From the street gangs?the bikers? The American mafia isnt a street gang or a cartel that must kill someone enter in its territory,plus risk for every murder that someone would flip and made more damages.
I think that the mob still kill but hide the bodies. Maybe should do like some camorra clan that had a "firing gruop" that are used only to carry out the murders.