The public fell for the lie that the Taliban in Afghanistan are terrorists allied with al Qaeda. Americans fought a war for 13 years that enriched Dick Cheney's firm, Halliburton, and other private interests only to end in another Washington failure.
The public fell for the lie that Saddam Hussein in Iraq had "weapons of mass destruction" that were a threat to America and that if the US did not invade Iraq Americans risked a "mushroom cloud going up over an American city." With the rise of ISIS, this long war apparently is far from over. Billions of dollars more in profits will pour into the coffers of the US military security complex as Washington fights those who are redrawing the false Middle East boundaries created by the British and French after WW I when the British and French seized territories of the former Ottoman Empire.
The American public fell for the lies told about Gaddafi in Libya. The formerly stable and prosperous country is now in chaos.