Why did Walter Gropius and Ise Frank leave Germany in 1934?

Walter Gropius and his wife, Ise Frank, left Germany in 1934 because they were unsympathetic to the Nazi regime that had taken power in the country.1

The political climate under Adolf Hitler’s government was hostile toward the avant-garde Bauhaus school of design, which Gropius had founded. The regime forced the closure of the school in 1933, signaling that modern design and intellectual freedom were incompatible with the state's totalitarian ideology. Following the school's closure, Gropius and Frank fled Germany secretly via Italy to seek exile in England.123