Protests during the playing of the United States national anthem have had many causes, including civil rights, anti-conscription, anti-war, anti-nationalism, and religious reservations. Such protests have occurred since at least the 1890s, well before "The Star-Spangled Banner" was adopted and resolved by Congress as the official national anthem in 1916 and 1931, respectively. Earlier protests typically took place during the performance of various unofficial national anthems, including "My Country, 'Tis of Thee" and "Hail, Columbia". These demonstrations may include refusal to stand or face the American flag during the playing of the Anthem. Some of the protestors object to honoring the slaveowner and author of the lyrics, Francis Scott Key.