NEW YORK (CBSNewYork)Mayor Bill de Blasio announced Tuesday that New York City is joining a global coalition of cities aimed at combating extremism and terrorist recruiting.

The Strong Cities Network connects government so they can share intelligence and strategies, WCBS 880’s Sean Adams reported. About two dozen other cities have signed up for the program, including Paris, London, Mumbai, Montreal, Atlanta and Denver.

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But Donna Lieberman, executive director of the New York Civil Liberties Union, fears the strategies could profile innocent Muslims.

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“They can be counterproductive, violative of constitutional rights and stigmitizing to the Muslim community,” she told WCBS 880’s Sean Adams.

De Blasio, appearing at a United Nations forum Tuesday, explained: “Extremism doesn’t discriminate. It comes in many forms. It comes in many different backgrounds and ideologies. Our mission should be to address extremism in all of its forms.”

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The mayor said he envisions efforts that extend beyond law enforcement. He wants community outreach, improved education and health and social services — initiatives that show people they are cared for.