The Godfather and The Godfather Part II are arguably ... Johnny owes his career to Vito, who once used Luca Brasi to threaten a bandleader to release Johnny from a contract and let him move ...
When Coppola followed it up with The Godfather Part II ... violence to get what he wanted (like when he had his hired gun Luca Brasi use the threat of murder to get his godson Johnny Fontane ...