'On 8 November 2004, after more than two months of aerial attacks, the US began its second major assault on Fallujah - originally codenamed “Thanksgiving Massacre” - devastating the city and killing hundreds of civilians. ' Much of the resistance fighting against the U.S. occupation of Iraq stems from the bloodthirsty violence launched by U.S. forces against Fallujah in November 2004. And to be accurate, November 8, 2004 was the Monday following George Bush's re-election on November 2, 2004. It would obviously have been bad politically for George Bush if a bloodthirsty slaughter had been occuring before the election.
It may seem curious why the U.S. Military used the codename 'Thanksgiving Massacre'. However the true history of the Thanksgiving celebration is a celebration of a successful massacre of native americans, so has a curious sort of logic to it.