On the Fact that In 1917, a Gal by the Name of Rose Pastor Stokes Was Sentenced to 10 Years In a Federal Penitentiary Simply for Composing a Letter to the Kansas City Star In Which She Was Critical of America's Involvement In WW1 and its Impact on Civil Liberties Here

So the Progressive movement was born out of warfare, racism (Wilson segregated the federal workforce and was heavily in favor of eugenics), and censorship, in other words. Way to go, guys!