As a kid I never figured out why my old man hated Roosevelt so much. And never a kind word for JFK. He never talked about politics either.
I guess he wanted me to figure it out for myself, which I finally did (coming of age during the Reagan years).
FDR and his socialist policies lengthened the recession and turned it into a depression. He surrounded himself with communists and ignored the millions being killed by the Russians and the Germans. He was obama before obama.