Black Mass (2015)

Continuity mistake: After Jimmy and Billy's mother dies, they're sitting in the kitchen having a drink. Billy's beer is about 3/4 full, then in a closer shot it's more full, with only a few sips taken.

Jon Sandys

Officer Flynn: You threatening me, Bulger?
Whitey Bulger: The last thing I would do if I was planning to harm you was to warn you in advance, you dumb fuck.
Officer Flynn: You better watch yourself, Bulger.
Whitey Bulger: You better fuck yourself, Flynn.