You know what could be considered the WORST of the worst?
Where scientists, in particular, Japanase Scientists ,who had mountains of data gathered on thousands of human experiments (chemical/biological weapon research), traded the data they gathered FOR THEIR FREEDOM. Spending the rest of their lives in comfort.
+2, especially considering the scientific value from this data and future scientific discoveries from these “scientists” was quite minimal. (with perhaps a few minor exceptions such as rocket scientist Werner Von Braun, though even this can be debated) There might have been a case made for this had the scientists actually been necessary for the cold war effort, but in hindsight I do not believe so.