Attacked in Essex Market

My wife and I were in Essex Market (in Manhattan) when I accidentally bumped into someone. I apologized but she proceeded to curse me out and threaten violence. We walked away when one of her friends starts shouting after us too. She threatened to slap us and called me a "ch-nk". My wife yelled back at her telling her not to call me a "b-tch" because she heard her say "b-tch" instead of "ch-nk". The girl then walks straight up to me and punches me in the face. We then fell to the ground wrestling as I was trying to protect myself, and she continued to hit me and choke me. Her friend (the girl who I accidentally bumped into) then joins her and starts hitting me too. My wife ran over to try to get them off me when the girl I bumped into turns around and punches my wife on the head. The shop owners jumped in to stop the fight. The security guard was called but did absolutely nothing while we watched the girls and their friends flee the scene. By the time the police arrived, they were gone.