From the fall of the Aztec empire to New Spain and then independence, there has been issues of race, religion, war and economic exploitation. But why have these been recurring issues? Can they be solved?
First off, this is WAAAAAY too broad of a question asking me to explain all these long standing issues with a reddit cap of 10000 words:
I will simply list the books you should read. Because I ain't gonna progress my carpel tunnel here.
The Mexican Left/Right divide: "The Mexican Right: The End of Revolutionary Reform, 1929-1940"
The degeneration of Mexico since Cardenas left and the stranglehold of Right Wing politics: "Mexico: The Genesis of its Political Decomposition: (Miguel Alemán Valdés 1936-1952)"
Why Mexico's military was a source of problems, ties into the previous books: "Curse of Huitzilopochtli" (hard to find)
Caudillismo (really big cultural reason dating back to Spain)