What era of policing used investigative tactics like the dragnet roundup of suspects and the third degree?

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The political era of policing, which spanned from the mid-19th century to the early 20th century, often used methods like the dragnet roundup of suspects and the third degree (a form of interrogation that could involve physical force) as investigative tactics. This era was characterized by a close relationship between police forces and political figures, with law enforcement methods being less standardized and more influenced by political considerations.

What Era of Policing Used Investigative Tactics Like the Dragnet