They're, in some American words, "communist bastards that gotta be nuked". The reich thing was something similar.
First off, communism is at the opposite end of the ideological spectrum from fascism -- even if the effects are often similar.
Second, America was quite reluctant to get involved in the war against Germany. It was Japan that drew the USA into World War II.
Third, most sensible Americans hope that change in China will come as a gradual relaxation of censorship and an increase in civil liberties -- not through violent war or revolution. I was hoping the Olympics would have some effect, but mostly it's just led to crackdowns.