Come See the Paradise (1990) on Netflix

Portraying one of the shadier details of American history, this is the story of Jack McGurn, who comes to Los Angeles in 1936. He gets a job at a movie theatre in Little Tokyo and falls in love with the boss's daughter, Lily Kawamura. When her father finds out, he is fired and forbidden ever to see her again. But together they escape to Seattle. When the war breaks out, the authorities decide that the Japanese immigrants must live in camps like war prisoners.