That is not Paul Castellano. It is his driver/body guard/underboss Thomas Bilotti who was also whacked at the same time. Notice that the body appears to be in the street and you are looking at the driver's side of the Lincoln. Castellano was on the passenger's side of the car and fell on the sidewalk with his head still inside the car. Bilotti died with his feet pointing towards the car, Castellano with his feet pointing away.
I wonder if Trump knew this guy as he was kind of a big deal back then.
Given Trump's profession and the mob involvement in the building trades back then, probably. I don't think Trump was mobbed-up in any sense but it wouldn't surprise me to learn that he had contact with Castellano who often ran in legitimate business circles.
Thanks for the info.