A police officer with the letter 'Z' on his helmet, the tactical insignia of Russian troops in Ukraine, blocks the street in Saint Petersburg on September 24, 2022, following calls to protest against the partial mobilisation announced by the Russian President. - Police monitoring group OVD-Info counted on September 24, 2022, at least 726 people detained in 32 cities across Russia, nearly half of them in Moscow, at rallies following the partial mobilisation designed to bolster Russia's operation in Ukraine. (Photo by AFP)