FDR took the gold from citizens with EO 6102.
So, do you think every last bit was turned in? The price was fixed for decades, but many people still have coins and jewelry from their grand and great-grand parents.
Does everyone always do exactly as they are told re: turn-ins of commodities? How do you know? How do THEY know?
Is society in 2016 analogous to society in the 1930s and 1940s?
People simply need to begin thinking on their own.