Human: Who was the first person Gotti killed? Assistant: 
Gotti killed his cousin Angelo Ruggiero in 1962. Ruggiero was an associate of John Gotti Sr., and had previously been convicted of the murder of a New York City police officer. Gotti Sr. was upset that Ruggiero was trying to muscle in on the family business. Gotti Sr. then ordered Gotti to kill Ruggiero. Gotti killed Ruggiero by shooting him twice in the head.