Question

what message did the rosenberg trial send to americans? no one was safe from communism, the soviets had the upper hand in the cold war, all immigrants were under suspicion of communism, there might be other soviet spies in the united states

Answer 1

The trial mainly sent the message that communism was an internal threat: no one was safe from communist infiltration and there might be other Soviet spies in the United States. It also helped fuel suspicion of immigrants and political radicals (many immigrants and left-leaning people were increasingly viewed as suspect).

The idea that the Soviets “had the upper hand” is only an indirect or exaggerated reading: the case suggested the USSR had obtained U.S. atomic secrets, which raised fears about Soviet capability, but it didn’t by itself prove the Soviets had an overall upper hand in the Cold War.