"Statistics suggest that Maria was undoubtedly poor and, most likely, Black."

That is a new way of reporting news, that journalist Gortázar seems to have invented here. When you don't know anything about the victim, just make something up from "statistics".

Where else can we apply this technique?

"Maria entered their lives around 1971 — the year Henry Kissinger visited China, John Lennon wrote Imagine, and Mexico hosted the first Women’s World Cup."

Good to know.

"The traditional maid’s room is gradually disappearing in Brazil, but buildings with separate social and service elevators — for domestic workers, visiting technicians, neighbors with dogs, or residents carrying groceries — remain commonplace."

Those are for separating workers carrying broken dusty floor tiles or ladders or a bunch of fiber cables from the other people using the building.

Anyway, ignoring the lacking quality of the journalism, more countries should do like Brazil and call slavery for what it is in legislation, instead of using euphemisms like "human trafficking".

At first I found interesting how you nitpick in irrelevant details while ignoring the bigger picture.

The point of the whole article is to use a single case to illustrate a bigger picture that you seem to deliberately oversee: abuse and exploitation of manual and unqualified workers.

But, then, I saw your Brazilian name and understood. Brazilian jingoism freaks out when Brazil "looks bad" to the world. It is a very common reaction among 3rd world countries. Indians, Pakistanis, Nigerians, etc are just like that too.