The L.A.P.D. HatSquad - A Brief History 

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The squad leader Max Herman, who went on to become an outstanding trial attorney, was very intelligent. He chose the squad members carefully. They were not just big and brawny, they were all sharp detectives. By the time the squad was formed big hats were out of fashion, so going back to the big fedoras really made them stand out from the crowd. They started law school about the time that it became apparent that criminal defendents were going to have more rights, and that knowing in detail how law was going to affect investigations in complicated cases became important.

@@DrMarkHShapiro Thank you!

My pleasure.