Just watched this film and it is not an objective representation of life in Buenos Aires. It is clearly subjective and 100% racist. Check out the opening soccer sequence with its skewed perspective and you get the picture.
In general terms, it's all low grade B&W mud just like this poor excuse of a film. From the beginning till the end... the script and filmmaker's POV perpetuates separation between countries and cultures.
Ultimately, what makes this story thematically xenophobic is that the Bolivian protagonist is murdered with no accountability, thus the filmmaker's message is... that's it's okay to be a racist.
How would the Director like it if we made a movie about crack whores from Montevideo working in Buenos Aires and called it... URUGUAY?