How did john Lennon did and why?

John was assassinated by Mark David Chapman outside of the Dakota building in New York City on December 8, 1980 at 10:50pm. Chapman fired 5 shots. The first bullet missed, passing over Lennon's head and hitting a window of the Dakota building. However, two of the next bullets struck Lennon in the left side of his back, and two more penetrated his left shoulder. Three of the four bullets passed completely through and exited the front of Lennon's body, resulting in a total of seven gunshot wounds. While all four shots inflicted severe gunshot wounds, two of the wounds were fatal, hitting his left lung and the left subclavian artery, near where it branches off from the aorta. He died on the way to the hospital.
Chapman was a crazy psycho who was brainwashed and trained by the c.i.a. to kill john. john died at 11:07pm.