George Orwell was an old Leftie, and he fought in Spain against the Fascists. He was very turned off by the extremes of both the Left and the Right, and while the Britain that he saw in his 1984 had some left wing stuff to it, I think his point was not so much that it was the Left wing that was the danger, but that all the totalitarian states were pretty much interchangeable, Left and Right. I think his Animal Farm was much more a satire and criticism of Communism and Socialism, and was much more pointed and specific and unmistakable in that way. You really can't interpret Animal Farm as anything else, since he focuses on the specifically Marxist elements of production, and diversion of the goods to the folks in power (the pigs, in this case) and the ways in which the well meaning revolution betrays itself and its population.
His point in 1984 is that the large powers are all essentially the same, and that it doesn't matter who is allied with whom. Everybody rewrites history to suit their own needs, as both Russia and Germany rewrote history, for example, around both the 1939 non-aggression pact and then the 1941 German invasion of Russia. Britain, Germany and Russia switch interchangeably in a bewildering set of alliances beginning with Britain's attempt to portray Germany as harmless and potentially friendly in 1938 with the peace in our time agreement between Chamberlain and Hitler which left Russia on the outs.
This is what Was being Mirrored in 1984, the switcho-chango politics of 1938-1941 between Capitalism, Fascism, and Communism and how Orwell though that, at the bottom, they were all the same. From his point of view, you know, they were. He served as a Colonial officer in Burma for a while, and was very much aware of what unchecked Capitalism and Colonialism did to folks. He saw that as a sort of Totalitarian philosophy, too, though you may disagree with him. You might try reading his essay on shooting an Elephant (called, if I remember correctly, remarkably enough, "To Shoot an Elephant.") He also has a book called Down and Out in Paris And London.
He's considerably more complex that you credit him for being.
Sincerely, Bob Kaven