On August 23, 1987, the 48th anniversary of the secret protocols of the 1939 Molotov Pact between Adolf Hitler and Joseph Stalin that ultimately turned the then-independent Baltic states over to the Soviet Union, thousands of demonstrators marked the occasion in the three Baltic capitals to sing independence songs and attend speeches commemorating Stalin's victims. The gatherings were sharply denounced in the official press and closely watched by the police but were not interrupted.