The Anti-Defamation League has pulled together 10 New York mayors - led by Bill de Blasio - who have all pledged to fight hate and extremism by signing the Mayors' Compact to Combat Hate, Extremism and Bigotry. "Now is the time for us to come together to oppose the hate and extremism we are seeing across the country, including right here at home in towns and cities across New York State," said Evan Bernstein, ADL's New York regional director, in a release.