Detained Russian opposition leader Alexei Navalny has called on Russians to protest the war in Ukraine on March 6 in Russian cities worldwide. He accuses President Vladimir Putin of “shaming the Russian flag and language” in his message.

He was able to reiterate his message on social media on Friday. “Show the world that Russians don’t want war. So come to the squares in Berlin, New York, Amsterdam or Melbourne, wherever. We are responsible for the future of Russia.”

Protests against the war have been virtually banned, and the authorities in Moscow have called for their support of President Putin. He invaded Ukraine militarily on February 24.

Navalny was jailed after returning from Germany early last year for allegedly violating conditions attached to his conditional release following a conviction in a controversial criminal trial.