He must have killed some people, though. He was convicted for five murders. If he was innocent I wouldn't imagine he would have essentially given up on parole/an overturned conviction and start bragging that he was in fact guilty of things 50 times worse than he was convicted of.

Agreed that there are probably not a ton of contract hitmen in OC, though there are people within families whose primary position seems to be to killing people, such as Harry Aleman.

I don't know that much about DeMeo but he wasn't 'made' for a while, right? So he wasn't really running his crew, necessarily, like he was part of a family.