He didn't, the murder is fake and staged. They even cut and pasted RFK's head onto the body. More shots were fired than his gun held. The LAPD destroyed the evidence by taking and destroying the sheet rock that had more holes than bullets.

I know i keep getting angry reading idiots saying "RFKs killer." Fucking retards. I haven't seen "fall guy" in one thread title

RFK faked. Sirhan probably not really jailed. These are the games the Intelligence masters play. Miles Mathis has plenty to say on this including why they would need to fake his death. http://mileswmathis.com/barindex2.pdf

Sirhan's recent pictures show a man who gets plenty of sunshine. Not too bad for aman in a dungeon for decades. Probably spent his years with Kaczynski and Manson at some remote villa.