Last year, on May 14, 2016, Jamala (Susana Jamaladinova), a Crimean Tatar and Ukraine’s entry in the 2016 Eurovision Song Contest hosted in Stockholm, won with her performance of “1944” about the Soviet deportation of the Tatars from Crimea, which began on May 18, 1944. Moscow protested, alleging that Ukraine’s entry should be disqualified for...