Out of respect I wanted to reply and say thank you for the links, and justification for another view. While I would say deliberate prejudice very possibly wasn't in the decision making process, a risk assessment was made. One where the risk of gassing black communities in places like St. Louis was the "safer option" because black people were second class citizens. They had no means to challenge it. If they found out, who would believe them? Who would care? For this reason institutional racism was reinforced by the military and to say " well it wasn't to be mean, they had to gas someone unfortunately" doesn't really make the decisions behind it not a decision based on race to hurt those who couldn't stand up for themselves because of their race , and therefore racism. Were other cities that were mostly white gassed to test biological warfare distribution methods? Yes. Did it impact them negatively too? Yes. Did it affect them the same way? No. the white community had a chance to expose it? Yes. Did they have an opportunity to try? Yes. They tried, and it failed. But what of the mostly African-american counterparts? At the time, none of that. Looks.pretty racist from here.