From Woody Guthrie's antifascist anthem Lindbergh:

So I'm a gonna tell you people: If Hitler's gonna be beat
The common workin' people has got to take the seat
In Washington, Washington

And I'm gonna tell you workers, 'fore you cash in your checks
They say "America First, " but they mean "America Next!"
In Washington, Washington

They knew back then what "America First" meant: fascist takeover of the government.