Santa Anita Park in Arcadia and Fairplex in Pomona, then known as the Los Angeles County Fairgrounds, were both Civilian Assembly Centers, temporary camps where Japanese Americans were sent as they were removed from their communities. Eventually, most were sent to Relocation Centers, also known as internment camps. Japanese Americans considered to be disruptive or of special interest to the government were sent to Detention Camps. Korematsu lost an appeal before the U.S. Supreme Court, which ruled in 1944 that the incarceration was justified due to military necessity. Legal historian Peter Ir...