Answer:
In one of the most sensational trials in American history, Julius and Ethel Rosenberg are convicted of espionage for their role in passing atomic secrets to the Soviets during and after World War II. The husband and wife were later sentenced to death and were executed in 1953.
Explanation: Julius had worked for the VENONA project might have made the Rosenbergs seem dangerous to the US government of the 1950s.