Pudgy Indian

I've seen a recurring theme in movies like Mars Attacks and Independence Day. Alien regimes come to the world and act like the U.S. government in taking the resources by force and genocide. However, the U.S. always seems to have their smallpox blankets at the ready in order to defeat the enemy coming to steal everything from the governments who have stolen everything from somebody else. In Mars Attacks, it was Western Yodelling music. In Independence Day, it was a missile attack to the opening whole of the alien space craft just prior to an ensuing attack. The great thing about the aliens coming to kill off everyone, they never seem to go after the Indians on the reservation.