Mayoral candidate Zohran Mamdani boasted he was a “proud democratic socialist” Sunday as he brushed off congressional Republicans’ threats to revoke his citizenship over his naturalization paperwork. Mamdani, 34, denied being a communist after opponents claimed he lied by not disclosing on his 2018 citizenship forms that he was a member of the Democratic Socialists of America. “No matter how many times these Republican Congress members or the president of this country calls me a communist, it