Like many aspects of Muhammad Ali’s life, this photo of him defeating Sonny Liston in 1965 transcended boxing. A new documentary assesses Ali’s impact inside the ring and out.

“There it was, legendary frame by legendary frame, frozen in time — continual snapshots when gladiators armed with red gloves and the power to persuade either championed the twisted hearts of this country, or drew the endless ire of it. And to think: This film reel of immortals was rescued from being dispatched to a landfill. If not for one Pennsylvania archivist, 38 reels of 16mm color reversal film of the best, most brutal boxing match in history would’ve landed in a sea of rubbish. Untouched, unseen, unfulfilled. Years earlier, Janice Allen salvaged a number of boxes tossed in a dumpster outside a film lab that had recently shut up shop for good. One box had ‘Ali’ written on it. She…