A radical Ukrainian feminist group commemorated the centenary of the October Revolution on Tuesday by protesting on a monument of a cannon in Kiev while topless. The Femen activist, dressed only in a red head scarf and KGB trousers called on workers to overthrow President Petro Poroshenko and Prime Minister Volodymyr Borysovych Groysman. She told the crowd: “Let’s crush the chocolate Hydra... Еще”, in reference to Ukraine’s very own ‘Chocolate King’ President Poroshenko. Femen uses its controversial brand of ‘sextremism’, often involving topless protests, to advance the cause of women’s rights. The October revolution began on October 25, 1917 -- which is November 7 according to the modern-day Gregorian calendar -- after a shot was fired at the Winter Palace by the Aurora cruiser ship.