We don't care that that old woman was probably homeless and drunk. Anyway , it doesn't let a Russian police officer behave himself like Jackie Chan or Bruce Lee and beat her.
A Russian newspaper "Komsomolskaya Pravda" managed somehow to get this video. They also identified the cop's name. His name is Nikolay Shilin (hope you won't get in the hands of this cop while in Moscow. You now know what can come out of it).
Watch (click to start playback):