As they proceeded west on Houston Street, a red Ferrari driven by Frank Magliato, the defendant, came on the scene. Apparently, the station wagon driven by Schneider clipped the rear of the Ferrari. Whatever the reason, Schneider did not stop. Defendant followed the station wagon until it stopped for a traffic light behind a truck. Defendant got out of his car. As he did so, Giani emerged from the station wagon carrying a nightstick. Initially, both men stood by their vehicles, facing each other and hurling epithets. Giani then started toward defendant. Uttering some of the choicest profanities, he threatened to kill defendant and directed him to "get out of here". Magliato returned to his car. In the interim the light had changed and Schneider drove off to find a parking spot, leaving Giani behind. Defendant followed the station wagon. His passenger, Edward Klaris, recorded its vehicle registration number. After Schneider had parked his vehicle at West Broadway and Broome Street, defendant drove past it and continued on toward Spring Street where he spied Giani, who, apparently, was searching for Schneider. Defendant drove his car past Giani, barely missing him.
Defendant then went looking for a police officer. Failing to find one, he drove to his home, parked the car and went to his apartment, leaving Klaris in the vehicle. He returned shortly. Now, however, he was wearing a holstered gun.
Magliato drove back to where the Schneider vehicle was parked and stopped across the street, near a phone booth. While Klaris called 911, defendant left his car and started toward the station wagon, again shouting profanities. Giani emerged from the station wagon, holding the nightstick in a threatening position. According to the prosecution, the two men faced each other across a distance of some 45 feet. Suddenly, defendant cocked his weapon and assumed a firing position, crouching with both feet planted apart and arms outstretched. The gun in his hand, he took deliberate aim and fired at Giani striking him in the forehead and causing such massive brain damage that he died two days later.