Caught this off CO Confidential: 

Presidential candidate Sen. Barack Obama's Colorado organization is planning anti-war rallies next Tuesday, Oct. 2 with events in Denver, Boulder, Colorado Springs and Pueblo.

The "Rallies to Turn the Page in Iraq" recognize a 2002 speech that Obama gave to warn that military action against Iraq could lead to "a U.S. occupation of undetermined length, at undetermined cost, with undetermined consequences." 

Ten days later, on October 11, 2002, the US Senate voted to give the President authorization to go to war in Iraq.

No doubt, there will be more protests planned in Colorado to mark that 5th anniversary date.