Or were Americans significantly less cowardly before FDR?
Imagine a modern speakeasy. Literally about speaking; you're banned for not using racial slurs, and gays and women aren't allowed. Obviously the government will instantly find and vaporize this establishment.
What's so different in the 1920s? Were Americans not snitches? Is there a trick to keeping it on the down low, which they weren't too afraid to find and use? Or were they de-facto government sponsored?