I enjoyed this film, though, as another reviewer has noted, it is basically 1950's American propaganda. Made in 1959 in vibrant and lovely (sadly, by today's standards, unrealistic) 50's colour, it gives a narrative-driven outline of FBI history from the 20's through to the 50's, the focus moving from gangsters and Klan politics, through to espionage against or countering that of the Third Reich and the Soviet Union. I was interested to see how some places look quite different from the air or train today (eg, Rio de Janeiro, which looks lovely back then), while some (eg parts of New York City seen from the El) look not dissimilar at all. It is indeed easy to lampoon the film, as another reviewer notes, about how the knew a target would not be going to church because he was a communist! Not so, in fact, the KGB and GRU always recommended their illegals to attend the local church, both to get into American society quicker and because the mere fact that they went tended to show that they were harmless. Still, entertaining and a good way to spend a couple of hours (once or twice only lol)!