I don't pretend to know who the Outfit has or hasn't killed since Zizzo and the Hatch, however in fairness Calabrese Jr. is a unique situation. They'd be stupid to knock him down. He's had a lot of spotlight on him, killing him would bring an incredible amount of heat on them. I don't know that if all other things equal, it could necessarily even be done back in the day. Maybe, but we'll never know. Don't forget, he had to cancel a few book signings because he received death threats. Anonymous loons? Maybe...probably...but who knows?