A prominent black Big Apple politician compared Mayor Zohran Mamdani’s cronies in the Democratic Socialists of America to white supremacists as a bitter rift among Democrats spilled out onto social media. Queens Borough President Donovan Richards went in on the DSA’s longstanding complaint among minority lawmakers of ignoring race in its crusade to grow its ranks and dismantle capitalism. “White supremacy comes in all forms,” Richards posted on social media late Sunday. The slap erupted from an debate online after a report in the New York Times that highlighted how the extreme left wing of the Democratic Party focuses on...