Futurist: Native Americans, mestizos, and whites are able to coexist relatively harmoniously in Latin America, no?
Not that I agree with related points that Joe00UK has made, but no, they have not been able to always "coexist relatively harmoniously in Latin America." I realize that I added the word "always" but if you study Latin America you begin to realize that there have been all sorts of conflicts, especially between Native Americans and whites. In Guatemala you had a government that at one point pursued what I think can be accurately called a policy of genocide against its Native Americans. Tensions in Bolivia are very much related to poor relations between Native Americans and whites. Ditto Brazil.
Conflicts between economic classes often feature as an aspect such racial and ethnic tensions. So you presently have such Left versus Right situations in Venezuela. Past conflicts of this sort have also occurred in Chile, El Salvador, Cuba, Nicaragua, Honduras, Argentina, etc. Where relative order has existed, it sometimes is maintained through harshly repressive measures, which are inherently unstable over the long term.