ELI5 How the WPA under Rosevelt now considered socialism? It employed millions of people and they built some of the most remarkable things. How come this is frowned upon in the US?
It's nothing new. The WPA was created in the era of political machines and the Red Scare. Early on, opponents worried that Roosevelt was creating a nationwide political machine run by far-left radicals.
So I don't know if the WPA itself would be considered socialism. I imagine it depends on your working definition of socialism.
What I can say with a little more confidence is that the WPA and a bunch of other New Deal programs were a direct result of pressure from American Socialists and Communists at the time.
I can't recall if this is apocryphal or not, but the story goes that FDR told a private gathering of America's biggest capitalists about his plans for the New Deal and told them they were going to pay for it through taxes. When they protested for a compromise, FDR said "this is the compromise. The alternative is guillotines." But I can't find that quote anywhere, so I may have made it up.