According to the report of Russia (RT) on the evening of the 24th, the streets of Moscow and St. Petersburg in the Russian capital appeared on the streets of the same night to "oppose the war", and the police decided to drive the crowd away because the assembly did not get permission from the authorities and violated the epidemic prevention regulations. Moscow police said about 600 people had been temporarily detained.

Screenshot of Russia Today report
A large group of demonstrators gathered in Pushkinskaya Square in central Moscow, many of them young people. They shouted anti-war slogans in unison, holding in their hands all kinds of slogans, some writing "Stop the war", "Oppose the war", some wrote "Ukraine is not our enemy" and "No one needs this war".
Anti-war demonstrators in Moscow, pictured from Agence France-Presse
Pushkin Square in Moscow is only 2 km from the Kremlin. Some of the demonstrators also marched along Moscow's Tverskaya street, which is also home to the moscow mayor's office.
According to the report, the police quickly raised the cordon at the various march sites and dispersed the demonstrators, on the one hand, the parade and assembly violated the new crown epidemic prevention regulations, on the other hand, the march was not allowed by the city authorities.
Videos circulating online showed demonstrators being taken away by police in a crowd. On the evening of the 24th, the Moscow police said that they had temporarily detained about 600 people for various "violations of public order".
There were also circulating videos of a demonstrator throwing Molotov cocktails at police during the march, though reports said the vast majority of the march participants were peaceful.
St. Petersburg's city center also gathered a large number of demonstrators, with local media saying there were at least 2,000 people at the scene of the march. As they began their march towards the famous Hermitage Square, the local police laid a cordon around the square in advance. Police did not say how many demonstrators were arrested, though the media said about dozens were detained.
Smaller demonstrations also took place in other Russian cities, such as Catherineburg, Perm in the Ural region and Novosibirsk in the Siberian region.
These demonstrations are clearly related to the tension between Russia and Ukraine in the past two days. Earlier, Russian President Putin announced the recognition of the independence of eastern Ukraine, and then in the early morning of the 24th local time, announced the launch of "special military operations" against the Donbass region of Eastern Ukraine. RT pointed out that Russia's subsequent actions were not limited to the Donbass region, but rather hit military targets throughout Ukraine.
OLAS said Putin said Russia's plan does not include the occupation of Ukrainian territory, but will strive for the demilitarization of Ukraine. Russia's actions have nothing to do with "violating ukraine's interests", but rather to protect itself from "those who hold Ukraine hostage".