Jack's father is also a pirate, the guardian of the pirate code. I guess he is an old pirate and a code guardian. The law is inviolable, so he is more respected. Jack's father shot and killed the man because he despised the pirate code.
Pirates of the Caribbean: At the End of the World is a fantasy adventure film released by Disney Film Company in 2007 and the third work in the Pirates of the Caribbean series. Directed by Gregor Verbinski, produced by Jerry Bruckheimer, starring Johnny Depp, Orlando Bloom, keira knightley and geoffrey rush.
The plot of the film revolves around the efforts of will turner, Elizabeth Swan, hector barbossa and the crew of the Black Pearl pirate ship to rescue Captain Jack Sparrow. They also need to confront the East India Trading Company led by Cutler Beckett and Davey Jones, and frustrate their ambition to wipe out all pirates forever.