1978 Georgian demonstrations

On 14 April 1978, demonstrations in Tbilisi, capital of the Georgian SSR, took place in response to an attempt by the Soviet government to change the constitutional status of languages in Georgia. After a new Soviet Constitution was adopted in October 1977, the Supreme Soviet of the Georgian SSR considered a draft constitution in which, in contrast to the Constitution of 1936, Georgian was no longer declared to be the sole state language.

Source: Wikipedia — 1978 Georgian demonstrations (CC BY-SA 4.0)