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:
Fiestas Patrias (Mexico)
Contrary to common misconception in the U.S.,
"Cinco de mayo" is not Mexico's "Independence Day", but rather commemorates an initial victory of Mexican forces over French forces in the Battle of Puebla on May 5, 1862.