Who do the characters of Animal Farm by George Orwell represent from the Russian Revolution?

Each character and many events in Animal Farm represent a character or event from the period of time surrounding and during the Russian Revolution. Early in the book, we meet Mr. Jones, the owner of Manor Farm. His character is based on that of the Tsar of Russia, Nicholas II. After Mr. Jones is kicked off the farm, we see each of the animals take on a new role. Napoleon, for example, is a doppelgänger...

Each character and many events in Animal Farm represent a character or event from the period of time surrounding and during the Russian Revolution. Early in the book, we meet Mr. Jones, the owner of Manor Farm. His character is based on that of the Tsar of Russia, Nicholas II. After Mr. Jones is kicked off the farm, we see each of the animals take on a new role. Napoleon, for example, is a doppelgänger for Joseph Stalin. Vladimir Lenin's role is basically skipped, but some feel that Old Major was a combination of Lenin and Karl Marx because he did not exhibit all of the traits of either, but he had some of each. Then we have Snowball as Trotsky, one of the first revolutionaries, who eventually becomes Stalin's enemy. The pig Squealer represents the Russian media or propaganda machine, constantly spreading false information to the masses. Boxer's role is that of the working class--the people of Russia who worked hard but had less education than those of more means. The sheep represent the general masses of people. Though little is said about Mollie, she is thought to possibly represent the old rich aristocracy, but she may also just represent the working class who opposed the Revolution. The collective pigs are like the Bolsheviks, and Moses, the raven, is the Russian Orthodox Church. The dogs are Animal Farm's version of the military police, the KGB. Finally, when Napoleon forces confessions from the animals and executes them, this parallels the mock trials Stalin held.