albert einstein, pablo picasso and the pope appealed for clemency.before the scheduled execution, michael and robby joined demonstrators in washington, d.c., and hand- delivered a plea for mercy to the white house. but president eisenhower refused to intervene. on june 16, 1953, nearly three years after their parents had been arrested, the boys visited them at sing sing for the last time. >> michael meeropol: and as i was leaving, i started to wail, "one more day to live, one more that? >> michael meeropol: oh, yeah, absolutely. it was terrible, you know? but it was honest. i mean, basically, i was pissed off because they were kissing us goodbye like, "see you next time." and i thought, you know, "they... they should take... make... a more big deal about this because this could be forever." >> cooper: the attorney general said the couple could still save themselves by providing information to investigators, but julius and ethel rosenberg remained united in silence. as the hours of execution approached, reporters converged on the prison and protestors