Convicted in 1951 of conspiring to hand nuclear weapons designs to the USSR, the Rosenbergs became the first American civilians executed for espionage. Their trial and death, amid Cold War hysteria over Soviet spies, remain contentious: declassified Soviet cables later confirmed Julius's guilt while suggesting Ethel's role was far more marginal than prosecutors claimed.
Julius and Ethel Rosenberg went to their deaths at Sing Sing prison in Ossining, New York, on a Friday evening rushed forward to avoid execution on the Jewish Sabbath. Julius died first, then Ethel, whose execution reportedly required additional jolts of electricity after the standard procedure failed to kill her immediately—a detail that horrified witnesses and fueled decades of controversy.
The case had gripped America since their 1951 conviction for conspiring to pass American atomic bomb designs to Soviet intelligence, centered on testimony from Ethel's own brother, David Greenglass, a machinist at Los Alamos. Global protests, appeals to Eisenhower for clemency, and passionate defenses from figures like Jean-Paul Sartre failed to halt the executions.
Decades later, declassified Venona intercepts and Soviet archives confirmed Julius had indeed run a spy ring, though historians now largely agree Ethel's involvement was minor—she likely typed notes rather than transmitted secrets—raising enduring questions about whether the death sentence handed to a mother of two young sons fit her actual crime.