Ryuichi Shimoda et al. v. the state was a court case in Hawaii in 1958. It was about a group of Japanese-Americans who were living in Hawaii and wanted to be allowed to own land, but the state of Hawaii said that only American citizens could own land. The Japanese-Americans argued that American citizens can be from any race and they should be allowed to own land. The court agreed with the Japanese-Americans and said they should be allowed to own land. This decision helped make sure that people of all races have equal rights, even in states like Hawaii.