Another few examples:

"In 1950, the U.S. Released a Bioweapon in San Francisco" https://www.smithsonianmag.com/smart-news/1950-us-released-b...

"United States Human Radiation Experiments" http://large.stanford.edu/courses/2017/ph241/guyman2/

I recently learned from a friend his mother was subjected to medical trials in an orphanage in Europe as a baby which run by GlaxoSmithKline and found to be illegal and unethical even by the standards of the time. I wonder how many trials and experiments were successfully covered up.