Do you think even Supreme Court Justices are always right ?
Dred Scott?
A cloak of legality can cover a plethora of crimes. Every thing the Nazis did was a hundred per cent legal. Legal is not always morally correct.
I am not sure about the FEMA camps, but I know that during World War II the US government built camps for the Japanese post haste. The camp at Poston, Arizona is gone now, but the concrete slabs remain. The people interned planted gardens, and now so many years later, when we have a good, wet winter, the daikon radishes spring up. The Indian people of the area will not eat them because they are "Jap Radishes."
My father was too old for military service, so he worked as a guard at the internment camps and the POW camp at Papago Park.