I love the subway but my mom doesn't

On a Wednesday a while back my mom got spat on, on the subway. She was waiting at Grand Central and she was walking on the platform to get a newspaper. There was a strange woman bundled up with her whole head suspiciously covered in a scarf. She was wearing a tattered, old, frayed at the edges coat from shoulder to toe. As my mom walked by this strange woman she glanced at her. When my mother got to the little convenience stand there were no newspapers so she went back to her spot, waiting for the train. As my mom walked by this odd lady once again, but not looking at her this time she said, quite audibly: "What are you looking at?" and proceeded to spit at my mother. Now my mother may piss me off at some times but that's what parents do and spitting at someone on the subway is still, just unacceptable.