If you think about the hats of your grandfather's era, they were known for their tough beaks, according to Mr. Cross. It was rumored that some people used to stitch razor blades into their hats in order to steal from others. The show Peaky Blinders mentions that the gang got its name from the razor blades sewn into their flat caps.
In the program, a gang member can headbutt an opponent and blind or injure him with the razor blade sewn into his cap. But while the Peaky Blinders were a real band, that's not where they got their name from. This was not just a fictional story; razor blades on hats were a well-known tool at the time. It is known for certain that the instructor at Camp X, the first spy academy in North America during World War II, was known for having razors in his hat and for teaching his students how to cut someone's throat.
Reports have also surfaced that teenage knife thugs are copying gangsters from the BBC crime drama Peaky Blinders by sewing razors into their caps. So, did people really put razor blades in hats? The answer is yes. It was a common practice among criminals and spies alike during the early 20th century. While it may seem like something out of a movie, it was actually a real-life tool used by some of the most notorious gangs and spies of the time.