Cussed out at a traffic light

I was crossing the street near the Counterbalance Park when the pedestrian light was on. A car behind me made a left turn and cut me off, and the driver cussed and yelled racist slurs. I told him I had the light and he cussed more as he drove away. I followed up and tried to take a photo of his license plate, and he cussed again and used racist slurs repeatedly when he stopped by the traffic light.