Qatar had been practicing modern day slavery for their whole construction industry for ages. Why would this be different?

A friend mine was an archaeologist in Qatar for years. They just imported brown and black (Africans, south Asians…) people to process all the sites. Her contract was with the government because they want to preserve as they built. All of the workers were nicer and protective of her because she was “brown” like them - as she is South East Asian and all the other “in charge” folks were white.