Kino-pravda no. 21 - Leninskaia Kino-pra(1925)

According to this film the capitalist countries celebrated Lenin’s death in 1924, which they expected to bring the demise of the USSR; instead 100,000 more Soviets joined the Russian Communist Party. Not listed on the definitive website animator.ru, but Irina Margolina credits Dziga Vertov with making the film.