It wasn't just on black Americans, even for LAC (let alone the countless other experiments carried out on civilians). This paper [1] has a lot more details. Just quoting it:
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"Other test locations were selected to simulate other Soviet cities (such as San Francisco, CA and Panama City, FL), forests (such as Chippewa National Forest, MN), flatlands (such as Fort Wayne, IN, and Corpus Christi, TX), deserts, and unpopulated areas (Dugway Proving Ground, UT)."
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The paper includes extensive details on the other reasons the areas that were chosen was chosen. It has nothing to do with who lived there, let alone voting trends. For things like this, the government simply comes up with a cover story, and most people simply believe what they're told. In this case, they told people that they were testing a harmless aerosol clouding system to protect areas from the Soviets bombers. And people simply unquestioningly believed them.
As for the projects, they were built in a similar way to Soviet apartment buildings because they had the exact same goal - reliable and comfortable housing made as affordably as possible. Wiki has a great picture of the projects that were experimented with here. [2] The city tore down some old deteriorating slums and created that complex under designs from the same guy who designed with World Trade Center.
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"Other test locations were selected to simulate other Soviet cities (such as San Francisco, CA and Panama City, FL), forests (such as Chippewa National Forest, MN), flatlands (such as Fort Wayne, IN, and Corpus Christi, TX), deserts, and unpopulated areas (Dugway Proving Ground, UT)."
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The paper includes extensive details on the other reasons the areas that were chosen was chosen. It has nothing to do with who lived there, let alone voting trends. For things like this, the government simply comes up with a cover story, and most people simply believe what they're told. In this case, they told people that they were testing a harmless aerosol clouding system to protect areas from the Soviets bombers. And people simply unquestioningly believed them.
As for the projects, they were built in a similar way to Soviet apartment buildings because they had the exact same goal - reliable and comfortable housing made as affordably as possible. Wiki has a great picture of the projects that were experimented with here. [2] The city tore down some old deteriorating slums and created that complex under designs from the same guy who designed with World Trade Center.
[1] - https://www.ncbi.nlm.nih.gov/books/NBK233494/
[2] - https://en.wikipedia.org/wiki/Pruitt%E2%80%93Igoe#/media/Fil...