Yes, generally putting critical access in the hands of foreign contractors, especially in third world or developing countries is a terrible idea. It has nothing to do with race. If you outsource to white Russian contractors in Russia you could be just as fucked.
Except the fact that Amazon's office in Hyderabad India is the their largest in the world [1]. We are not talking about contractors - they are employees like any in their Seattle one, many actually do relocate back from US to India office.
I think the implication is that someone poorly paid and lightly supervised is more susceptible to bribery. Whether they are a contractor or full employee, or the color of their skin, is irrelevant. I personally doubt pay makes a difference, either you have integrity or you do not.