One throwaway line at 1:45 - This land was my land.
JibJab.com "This Land!"

North America, like Africa, a continent, not a people:

Woody Guthrie grew up in Comanche territory but the 'tribe' is an American federal government/European construct.

The 'Last Chief of the Comanches,' Quanah Parker (1845 – 1911) died just one year before Woody was born. Quanah's mother was Cynthia Ann Parker (Narua)(1827 – 1871).

Cynthia Ann's family, young and old, was murdered and she was taken captive by a band of Quanah's tribe in the 1830s. It was an ancient & brutal tradition that had nothing to do with the arrival of Europeans save for the previous (re)introduction of Equus ferus by the Spanish & Portuguese.

Great-grandfather William Edward “Pap” Guthrie (1809 – 1891) moved the Guthrie family to the Territories in the 1840s at the very peak of the culture clash.

S. C. Gwynne's Empire of the Summer Moon: Quanah Parker and the Rise and Fall of the Comanches, 2011 is the best read you'll find on the particulars.

TL/DR: By Comanche 'old ways' – Might Makes Right. Whining about it is for losers.