Russian opposition politician Alexei Navalny has called for a fresh wave of anti-corruption protests to mark an an upcoming national holiday.

Navalny announced on Wednesday that protests would take place on June 12, also known as Russia Day. The holiday commemorates the proclamation of Russia's sovereignty in 1990.

“Our goal is simple: we, honest patriots, must do everything in our power for more people to join us … to fight together against crooks and traitors,” Navalny wrote in his blog on Wednesday.

“June 12 marks a great opportunity: an official national holiday, a day off. Russia Day. You and I, we're fighting for the best future for Russia, right?”, he said.