How did japanese interment camps violate the constitution?

I believe that the belief for violation of the constitution regarding Japanese Internment Camps during World War II stems from the constitutional right to trial. 

Taken from their homes and having their items and properties repossessed over their heritage infringes on the right to trial in virtually every sense. Despite not committing crimes and not undergoing trial, they were considered immediately guilty.

Hope I could help!

River valleys were good places for hunting and fishing.