It really doesn't detract from the greatness of Roosevelt and the brilliance of the New Dealers he assembled to take note: he was being challenged, hard, by the populist rhetoric and proposal of Louisiana's Huey Long.
Long was a controversial figure - he's Willie Stark of Robert Penn Warren's All the King's Men. He destroyed some of his opponents and he scared a lot of people, though long-time mayor of Franklin NH and occasional NH-02 Congressional candidate Eugene Daniell was a strong supporter. (T. Harry Williams' Huey Long is a great biography. Randy Newman credits it in a footnote(!) on his own great album about Long, Good Old Boys.)
The reason I'm thinking of Huey is, I'm not sure FDR would have been as bold if he were not feeling pressure from a loud, organized bloc on his left to counterbalance Wall Street...
This is an Open Thread.