* AdaptationDisplacement: Bet you didn't know it was based on a book called ''Beer and Blood''?
* DoNotDoThisCoolThing: The film opens with a title card explicitly stating that the studio did not seek to "glorify the hoodlum or criminal". It makes the gangster cooler, more interesting, and more important than his straight-laced brother.
* OneSceneWonder: If Mae Clarke is remembered today at all, it's for that one scene where Creator/JamesCagney smashes the grapefruit in her face.
* SignatureScene: Tom Powers pushing a grapefruit in his girlfriend's face.