“Families of the Mafia,” which is billed as a six-part series, is set to premiere Thursday, April 9, on MTV following “Jersey Shore Family Vacation.” The network describes the show as “the gripping realities of four mafia-tied families on Staten Island as they navigate a divide between parents attempting to guide their children to a better life, and their offspring who want to write their own stories. With one lifestyle and two generations, tensions run high as they decide whether to embrace their families’ legacy or break generational curses.”