It's an urban myth that the US has a better humanitarian conduct than other countries. Throughout the 40ies, 50ies and 60ies there have been despicable experiments on unwitting citizens, sometimes with the active help of Nazi and Japanese war criminals, but in any case using research notes from concentration camps. So the above isn't the only incident and not the most outrageeous of all.
http://en.wikipedia.org/wiki/Unethical_h...ted_States
http://en.wikipedia.org/wiki/Unethical_h...ted_States