Julius and Ethel Rosenberg were convicted of espionage on March 29, 1951. They sold atomic secrets to the Soviet Union. Julius was working as a spy and worked with his brother-in-law, David Greenglass, to send information and bomb parts to the USSR.
Sources
“Julius and Ethel Rosenberg Executed for Espionage.” History.com, A&E Television Networks, 24 Nov. 2009, www.history.com/thisday in-history/rosenbergs-executed.
Singman, Brooke. “Legal Scholars Claim New Evidence Shows Ethel Rosenberg Was Innocent in Infamous Spy Case.” Fox News, FOX News Network, 22 Dec. 2016, www.foxnews.com/us/legal-scholars-claim-new-evidence-shows-ethel-rosenberg-was-innocent-in-infamous-spy-case.
“Atom Spy Case/Rosenbergs.” FBI, FBI, 18 May 2016, www.fbi.gov/history/famous-cases/atom-spy-caserosenbergs.
The Nation. “The Rosenberg Case.” The Nation, 29 June 2015, www.thenation.com/article/archive/rosenberg-case/.