Even though this was filmed while the Motion Picture Production Code (colloquially referred to as the Hays Code) was still being enforced, the filmmakers were able to push back on some of the limits, evidence that the Code was weakening in the 1950s. This film fairly graphically shows two men after being shot dead, shows a woman who had been badly beaten, and talks openly about prostitution and underage prostitution. The filmmakers most likely argued these "shocking" scenes would reiterate the pro-law-and-order message.
For a movie that is boldly proclaiming that Miami has no organized crime, it ironically suggests that a conspiracy of citizens working outside the law is the way to stop organized crime.
U.S. Senator George Smathers appears in this 1954 film and declairs organized crime driven out of the state.