What does Young say is "most astonishing" about the World War II antiwar movement?

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Read Dissent: The History of an American Idea, by Ralph Young

What does Young say is "most astonishing" about the World War II antiwar movement?

Answer:

What Young finds "most astonishing" is the great number of conscientious objectors, as even organizations that had anti-war positions in the past, such as the socialist, the communists, and the anarchists, were unanimously presenting their support for World War II as a fight against fascism.

Explanation:

Those who were against the war believed that governments had had chances to stop the violent conflict, but didn't take them.