12/04/2014 09:32 am ET Updated Dec 04, 2014

How Police Unions And Arbitrators Keep Abusive Cops On The Street

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When Frank Serpico, the most famous police whistleblower of his generation, reflected on years of law-enforcement corruption in the New York Police Department, he assigned substantial blame to a commissioner who failed to hold rank-and-file cops accountable. That's the classic template for police abuse: misbehaving cops are spared punishment by colleagues and bosses who cover for them.

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