Everything you need to understand or teach Martian Time-Slip by Philip K. Dick.
Set on a future Mars which is in the process of being colonized by Earth, it seemingly follows all of the science fiction notions about the red planet.
Mars is mostly a desert with the colonists (mainly American whites) managing to eke out a living near the old canals which still have some water.
Besides being studded with UN colonies, it is also traversed by the last wandering representatives of the native civilization, the Bleekmen. Mars is presumably a frontier civilization and should embody the values of the American frontier (it is billed in Earth propaganda as "Earth's future"). In reality it is being exploited in the worst way by land speculators and is being used as a dumping...