The main issue is that this was done and the people in the neighborhoods WERE NOT INFORMED or ASKED FOR CONSENT. The upshot is that poor black folks can still be used as GUINEA PIGS whenever those in power wish.
As to black folks getting "keyed-up emotionally" because they don't understand science, I once saw Jay Leno as some WHITE COLLEGE GRADUATES how many moons the earth had, and they answered TWO.