Watching MLP first time, I was a bit wondered that society of ponies is quite similar to ours. Because if it's possible to build a communism - Equestria with it's Elements of Harmony is the best place for that. But are even them enough to create an ageless utopia, or just existing one will be ruined? By the way, industrial stuff on background isn't very far from realities of current episodes.
*A building on a picture is refer to the Palace of Soviets, a project, which could be implemented in 50's in Moscow to symbolize a triumph of socialism. Details: [link]