It took almost the entire presidency of George W. Bush for people to understand that The Regime was lying about why it sent people to die in Iraq. There, indeed, were comparisons to Hitler by those who saw Bush, Cheney and others promoting and actually carrying out overreaches of the executive branch. For the greater part of the so called "Bush Administration", those who opposed The Regime were marginalized and dismissed by the mainstream media.
Immediately following 9/11, it would have been very difficult to find an American who did not stand firmly behind his/her president. That loyalty, although misdirected, was carried into the invasion of Iraq.
The real "attacks" on The Regime happened not only after it was selected in 2000, but after it began leaking the fact that it intended to invade Iraq. This was in 2002, almost two years after the 2000 election. Furthermore, the opposition was based upon policy and only policy. It was based upon policy that it took The Regime almost two years to formulate.
Before Barack Obama was even inaugurated in January of 2008, there was already one well organized web site dedicated to impeaching the then president-elect. That's how long it took people to realize that Barack Obama's "presidency was a failure and based upon a lie".
Yesterday, September 12, 2008, 8 months after that inauguration, Glen Beck and the corporate sponsored FreedomWorks Foundation led what was described as tens of thousands of people in a march on Washington, DC. Naturally, the sponsors of the event claimed that there were a million or so people in attendance. If there were truly 400 or 500 people in attendance, one could dismiss the event as being overhyped by its organizers. However, MSNBC claimed that "tens of thousands" of so called "fiscal conservatives" showed up to "protest government spending".