This is sad to see:
Kenny Moore 1972 4th place Marathon, 14th in 1968 age 78.
Among other things:
"Moore spent several years working to try to free Ethiopian marathoner Mamo Wolde, the 1968 Olympic champion (and 3rd in 1972 to Moore's 4th). Wolde had been arrested by Ethiopian authorities who felt he participated in an assassination attempt against the country’s dictator. Moore and the IOC petitioned for his release, which occurred, but only after he had spent six years in prison."
Kenny Moore Obituary - Olympian and Writer Dies at 78 (runnersworld.com)