Hi there,
Thanks for your question. America's reaction to people who criticized its participation in WW1 was mixed. On the one hand, there were those who supported the war effort and those who opposed it. Those who opposed the war were often met with hostility and criticism from the government and the public. However, there were also those who supported the war effort and defended the government's decision to enter the war. Ultimately, the public's opinion of the war was divided.