A Muhammad Ali film by Ken Burns — enough said
Photo courtesy of PBS: Muhammad Ali after his second win over Sonny Liston. Visit my website homepage, TomShanahan.Report By TOM SHANAHAN What’s left to learn about Muhammad Ali? Plenty. That is, if Ken Burns is involved. He is, releasing his latest Public Broadcast System documentary in four two-hour parts, Sunday at 8 p.m. ET through Wednesday. Appropriately, it's simply titled, "Muhammad Ali." We’ve already read multiple thick biographies, watched previous documentaries and movies on the big screen about…