Indigenous peoples of Mexico
When Mexico gained independence in 1821, the casta system was eliminated as a legal structure, but racial divides remained. 
White Mexican argued about what the solution was to the "Indian Problem", that is indigenous who continued to live in communities and were not integrated politically or socially as citizens of the new republic. The Mexican constitution of 1824 has several articles pertaining to indigenous peoples. The second article of the constitution of Mexico recognizes and enforces the right of indigenous peoples and communities to self-determination and therefore their autonomy to:
Mexican Texas
The first violent incident occurred on June 26, 1832, at the Battle of Velasco. On March 2, 1836, Texians declared their independence from Mexico. The Texas Revolution ended on April 21, 1836, when Santa Anna was taken prisoner by Texians following the Battle of San Jacinto. Although Texas declared its independence as the Republic of Texas, Mexico refused to recognize it.