I was listening to a Jean Shepherd broadcast on SW, and it must have been from 1967. Shep was ranting about the movie, either after seeing it, or being asked about it at a cocktail party.
He grew up in/near a town that was "visited" by one of the gangs. The old bank guard was killed unnecessarily, and then on the way out of town, they see a cop doing school crosswalk duty, they stop, call him over, and shoot him dead.
Shep wasn't big on glorifying murderers...
In any case all their debts have now been paid, their train has left long ago to meet the judge.