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:
Mission Indians
When Mexico gained its independence in 1834, it assumed control of the Californian missions from the Franciscans, but abuse persisted. Mexico secularized the missions and transferred or sold the lands to other non-Native administrators or owners. Many of the Mission Indians worked on the newly established ranchos with little improvement in their living conditions.