William Bratton has taken over the nation's largest police force and is pledging reforms to how New York City police officers work with the community.
The 66-year-old was sworn in Thursday by Mayor Bill de Blasio at a ceremony at police headquarters.
Bratton says he will work to improve the relationship between cops and New Yorkers who feel over-policed by the department's stop-and-frisk policy. He also says he will continue the department's massive counterterrorism efforts.
Hundreds attended, including district attorneys, City Council members and federal prosecutors. Los Angeles civic leaders also attended.
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