Guns Don't Argue is a 1957 low-budget feature film about the early achievements of the FBI in defeating the most notorious criminals of the 1930s. The film involves dramatizations of the crimes and eventual demise of various gangsters, along with a moralistic narrative. It was edited together from a composite of three episodes from the 1952 TV series Gangbusters.

Arthur Raymond "Doc" Barker was an American criminal, the son of Ma Barker and a member of the Barker-Karpis gang, founded by his brother Fred Barker and Alvin Karpis. Barker was typically called on for violent action, while Fred and Karpis planned the gang's crimes. He was arrested and convicted of kidnapping in 1935. Sent to Alcatraz Federal Penitentiary in 1936, he was killed three years later while attempting to escape.