They both use a lot of lies to shape public opinion. From Jeff Deist at ronpaulinstitute.org:
In the period leading up to the US invasion of Iraq in 2003, the Bush administration and its media accomplices waged a relentless propaganda campaign to win political support for what turned out to be one of the most disastrous foreign policy mistakes in American history.
Nearly two decades later, with perhaps a million dead Iraqis and thousands of dead American soldiers, we are still paying for that mistake.
Vice President Dick Cheney, Attorney General John Ashcroft, Assistant Attorney General John Yoo, and Defense Secretary Donald Rumsfeld, were key players behind the propaganda—which we can define as purposeful use of information and misinformation to manipulate public opinion in favor of state action. Iraq and its president Saddam Hussein were the ostensible focus, but their greater goal was to make the case for a broader and open-ended “War on Terror.”
So they created a narrative using a mélange of half-truths, faintly plausible fabrications, and outright lies:
And so forth.