I don't include this movie in the 70s Italian crime films genre, since it is just a documentary narrating a true story. The people you see been shot were really killed the same way some months earlier in Milan's streets. The film narrates the robbery that took place in a Milan's bank in the fall of 1967, and was realized following the public shock that the whole story generated.
I really liked this movie, for the ability of the director of depicting either the mere facts and the mentality of the bandits.