At 18:45 on 7th March 1921, the government batteries at Sestroretsk and Lissy Noss fired the first shots against the Rebel City of Kronstadt. It was the eve of the Women Workers’ Day and the fourth anniversary of the start of the Russian Revolution (February Revolution, old calendar).
Radio Kronstadt broadcast this message from the free Soviet:
Today is a universal holiday — Women Workers’ Day. We of Kronstadt send, amid the thunder of cannon, our fraternal greetings to workingwomen of the world. May you soon accomplish your liberation from every form of violence and oppression. Long live the free revolutionary workingwomen! Long live the Social Revolution throughout the world!