This is almost a sign of how fall the American mafia has fallen in a way. Not to say that there haven’t been attempts on bosses lives when they weren’t around trusted bodyguards, but to get killed by some almost random kid in front of his house? Couldn’t imagine someone even being able to see someone like Carlo Gambino, Al Capone etc. in that scenario.
Even when Capone was sick he kept body guards around him, say what you will, but Capone was a true gangster...if Capone was on the streets nitty would still be alive