Bush called Iran evil.
So, in typical knee jerk fashion, Obama and most of the media assumed Iran wasn't so bad. Iran was a "reasonable partner" that we could "talk to" "without preconditions".
Therefore, now that Iran is acting badly, Obama and most of the media are shocked to discover that Iran's "guided Islamic democracy" is in fact a theocratic dictatorship.
Let's agree Bush stole the 2000 election, and was a terrible president, But, let's also agree that "do the opposite" is neither an intelligent policy nor a remedy for every one of Bush's failures.