that came out in 1983.

I remember that, with the weird chick Golgo bangs then she tries to run him down on a horse on the beach or the business man who was the main antagonist after Golgo killed his son. IIRC there's a phone call the business man takes where the other end of the line flat out states they were the ones who killed JFK because of what the business man told them to do. Had a good twist about the son, though.