What crime was the tall convict convicted of committing?

The tall convict was convicted of robbing a train, and he is very bitter about this conviction. The tall convict blames the comic books he read as a young boy which, he claims, glamorized train robberies. He does not think he should have been convicted because he never killed anyone and never really stole anything because he was arrested as soon as he stepped food in the car that held the passengers' luggage.