The Highwaymen (2019)
Hammer's wife Gladys, portrayed as sweet and demure in "The Highwaymen" seems to have had a questionable past.
"In 1917 Hamer married Gladys (Johnson) Sims, the widow of Ed Sims, of Snyder, Texas. Gladys and her brother Johnson were charged in 1916 with having murdered her husband Sims that year. In the fall of 1917, the trial of her brother was moved to Baird, Texas. On October 1, 1917, Hamer and Gladys, his brother Gus Hamer, her brother Johnson and his wife, were all on their way to Baird and stopped at a garage in Sweetwater to get gas. By chance they encountered Gus McMeans of Odessa, a brother-in-law of the late Ed Sims, at the garage. The Hamers and McMeans got in a pistol battle. McMeans was a former Texas Ranger and sheriff of Ector County. Hamer and McMeans "were clinched," and the latter died of a shot to the heart. Hamer was wounded. Ten shots were fired in the gunfight. Police collected a total of seven revolvers, two automatic pistols, and three repeating rifles from the members of the two parties. McMeans was survived by his wife and 11-year-old son, and three brothers."
Gladys was cleared of the murder charge.
In the early 1930s, the Barrow Gang-along with the Dillinger Gang, the Barker-Karpis Gang, and others-exploited the lack of centralized interstate law enforcement authority by using newly-introduced high-performance automobiles and recently-constructed highways to quickly flee across state lines before local police could effectively respond to their violence. Soon after Barrow and Parker's deaths, the U.S. Congress federally criminalized bank robbery and other violent crimes, and greatly expanded the powers of the newly-renamed FBI.