The necessary part is only that the prospective subjects aren't protected by strict regulatory regimes like in the United States. Somalia, as, essentially, a failed state, I assume, has lax medical regulations and is a possible candidate for experimentation.

I think it's a bit racist for you to generalize my description of a poor and under regulated state, like Somalia, as being equal to "black people". Not all countries in Africa are like Somalia, you know. I suggest reading a bit more about Africa. I personally enjoy watching YouTube videos made by creators in different countries, African countries have a wide range.

As Mark Twain said, "Travel is fatal to prejudice". Today, we can virtually "travel" with the click of a button. Not all black people are poor Somalis!