“These were our lands originally.” is the claim of many Latinos attempting to enter the US illegally. 
Are we sure of that? 

Southwest Native Americans did not like the Spanish or the Mexicans and saw them both as invaders. 

The Chumash Revolt 
The Chumash revolt of 1824 was an uprising of the Chumash Native Americans against the Spanish and Mexican presence in their ancestral lands. The rebellion began in three of the California Missions in Alta California: Mission Santa Inés, Mission Santa Barbara, and Mission La Purisima, and spread to the surrounding villages. All three missions are located in present-day Santa Barbara County, California. The Chumash revolt was the largest organized resistance movement to occur during the Spanish and Mexican periods in California. 

Apache-Mexico Wars 
The Apache–Mexico Wars, or the Mexican Apache Wars, refer to the conflicts between Spanish or Mexican forces and the Apache peoples. The wars began in the 1600s with the arrival of Spanish colonists in present-day New Mexico. War between the Mexicans and the Apache was especially intense from 1831 into the 1850s. Thereafter, Mexican operations against the Apache coincided with the Apache Wars of the United States, such as during the Victorio Campaign. Mexico continued to operate against hostile Apache bands as late as 1915. 

This disputes the claim that the southwestern US is Latino ancestral land. 
The Apache did not see them as Native people, but as a different race attempting to invade the US. 

Irony acknowledged. 

Eric J. Rose