*In reference to Romulus Prime's post...
This above post shows Trek's biggest failing. People have been conditioned into thinking that an entire race of people are all going to act alike and think alike. Shinzon aligned himself with like-minded
folks. There were apparently folks in the military who were willing to align with him, at least one senator who aligned with him and likely some members of the Tal-Shiar who aligned with him.
The United States at one point had alliances with both Osama Bin Laden and Saddam Hussein, who shared nothing more in common with us than being the enemies of our enemies.
Star Trek: Nemesis
doesn't fail because of Shinzon's rise to power, it fails because his actions make no sense for most of the movie that we actually see and that some elements were forced into it that really didn't fit.
Hell, the Roman Empire had non-Romans rule it at times.