A very small group of the countries' inhabitants took over enormous parts of the territory (the major richness of the country in the past and, still, nowadays) by killing, enslaving or expulsing its original owners. Later however, they refused rigorously to pay taxes on the appropriated land and on the income through it, and still do. History repeats itself in cycles.
Structural racism. Argentina defines itself as a country of European immigrants. But when it looks into the mirror of its own history, it sees a mixed-raced country. The frequent "campaigns" of killings and spoils could not hide it. However they could enforce colonial over-exploitation. The Indigenes and the 'Mixed' are the poorest and most excluded citizens of Argentina (concerning education, access to culture, public charges, steady legal jobs, etc.)
The housekeepers so strongly requested by Argentinean 'Ladies' from Buenos Aires are mostly indigenes. Structural racism presents itself in a deceitful way: the difficulty or rather impossibility for a indigene child or adolescent to find access to formal education, which the socio-economical system generates, turns them into targets of discrimination and perpetuates the vicious circle which identifies the indigenes as minorly educated and poor. Argentina of the 21st Century presents itself as a country of 'two speeds'. The part of the population which is integrated into the dominant socio-economical system - and the part which is excluded. And, on the other hand, like so many centuries ago, the original population keeps on suffering in its own place.
Injustice. More than 500 years have passed after they started being chased away from their lands. Nowadays there is again the same procedure with the territories they were left with before (almost always the ones with less fertile soil)