Yep, the Communist Party USA actively protested in the streets against going to war against Nazi Germany.
Woody Gutherie’s “This Machine Kills Fascists” slogan only got applied to his guitar AFTER America got in the war. Until then the Nazis offered just another brand of socialism.
In an American Masters segment on Woody Guthrie they mention how Pete Seeger and the Weavers, devout socialists, were anti-war only until Hitler attacked Stalin and then they turned 180° and were doing tours for war bonds. Sometime later they were outed as commies an the tours stopped.