This clip was created to promote the 1949 rerelease, and it strikes me as somewhat hyperbolic. The for-real FBI showed a James Cagney action flick as a training film? *snort* Were descriptions of one’s upcoming travels typically considered threatening in the 1930s? (“A gangster leaves Chicago on the 9:15 train headed for Pittsburgh, see…”) Every word of G-Men is true?
We might need to start going a little easier on the people who make trailers today.