[TOMT] [MOVIE] [1990s or 2000s] Gangster film that's similar to Road to Perdition

I watched this movie years ago and after watching Road to Perdition I thought about it again. Here is what I remember: It takes place in the 20s or 30s in the US. There's a guy (who's part of the mafia I think) that has to leave the city (L.A I think) and for some reason there's a kid that has to go with him. The kid narrates the movie I think. The two of them don't particularly like each other. They eventually arrive in some small dusty town where they decide to stay. The movie takes place mostly in this town. The kid then has to go to school after he was caught stealing sweets from a candy store. The guy eventually gets feelings for the woman that owns the candy store. There's a bank in the town that gets robbed by a group of criminals from the city near the end of the movie and I think the guy and kid try to stop them.