6. The US covered up Japan’s horrible human experiments to gain their data
Some of the most horrible experiments you could think of, including live dissections were carried out on unwilling POWs as well as civilians, by Japan’s biological warfare unit. All told, a million people died in these experiments. In order to gain an advantage over the Soviets, the US decided to overlook the whole “horribly repugnant activities and instead granted immunity in exchange for the data. No wonder it’s on our list of biggest US Government cover ups of all time, right?