Senator Robert F. Kennedy and the Fearsome Foursome of the Los Angeles Rams football team (1968) by Bill Eppridge.
This photo is just so bad-ass. Amazing. I highly recommend you read the post that accompanies this photo (and others) by Eppridge on Wired.com. An exerpt:
Bill Eppridge knows the rules of photography have changed. The ways of the ’60s, when he was a staff photographer at LIFE magazine, are long gone: Staff photo positions are near extinct, everyone with an iPhone now claims to be a photographer and film seems to be a four-letter word of antiquity.
Indeed.