This is a fantastically good book, which challenges some conventional misconceptions about both Freudianism and early Soviet communism.
I would have appreciated more material on the attitude of some of the dissident Freudians, like Reich, toward the new Soviet Union. But the emphasis is on the other side of the equation -- the way the Leninists viewed Freudianism, and the psychoanalysts within their own country.
The material is complicated, but Miller makes it as straightforward as humanly possible.