Yeah, I was.
When there was a Jewish Mob it was huge. Lepke Buchalter ran Murder Inc. Meyer Lanskywas the alleged brains of the Combo. Bugsy founded Vegas and ran the town until his baby blues wound up on Virgina Hill's carpet. Longy Zwillman ran the docks until syph related demantia obligated his early retirement. I'm sure we can think of many more.
Of course their kids became doctors, lawyers and accoutants, so they left the underworld behind.