RFK turned away when he saw Sirhan pointing the gun at him. There is no credible proof of a second shooter. None. But even if you believed that, Sirhan was an assassin. A second shooter would not absolve him of that guilt.
Life is so much simpler when you can dismiss inconvenient evidence.
It's broadly agreed that the LAPD did a shoddy investigation. Evidence was destroyed or disappeared. The autopsy suggests that RFK was shot from behind at close range.
Most witnesses say Sirhan wasn't close enough to shoot RFK behind the ear.
The Washington Post has done surprisingly great coverage on RFK's murder:
"Sirhan was captured in the pantry, but seemed unusually calm in police custody and seemed to have no idea why he was arrested, authors who have listened to his taped statements have said.
In addition, his .22-caliber pistol could hold only eight bullets. But in addition to the four shots into Kennedy and five into the victims — one bullet was theorized to have hit two people — other bullets were found in the wood frames of doors in the pantry. Los Angeles police criminalist De Wayne Wolfer would later say that there were no bullets in the frames and that the holes had been made by the impact of kitchen carts. In 1969, the police destroyed the frames, even though the case was on appeal.
Pease and others argue that there were simply “too many holes” in the pantry for Sirhan to have been a lone gunman, and that witnesses were certain the holes in the frames were caused by bullets. She even found a video in an archive at the University of California at Los Angeles that appears to show bullets in the frames. Wolfer’s work as a crime scene analyst was later harshly discredited by California authorities.
But Sirhan’s defense team elected not to challenge any of the physical evidence, ignoring the autopsy report by famed coroner Thomas Noguchi showing the Kennedy shots were fired just inches from his back and head...
Not long after the trial, a ballistics expert examined the three bullets recovered from the scene and found that they did not match Sirhan’s gun. A subsequent retesting was done, but the bullet removed from Kennedy’s neck by Noguchi had vanished, and no ballistics match was ever made between the bullets and Sirhan’s eight-shot pistol."
https://www.washingtonpost.com/history/2019/02/09/cia-may-have-used-contractor-who-inspired-mission-impossible-kill-rfk-new-book-alleges/
