The mastery of human consciousness should be a paramount political objective.
We have nothing to repent of.
General Kryuchkov, Chairman KGB
When the American POWs returned from captivity in Vietnam, military authorities noticed there were no amputees. At the time, this puzzled the experts. With over 2000 men in captivity, one would expect at least a few amputees. But in light of what is known about the Soviet human experimental program, it now makes a lot more sense. Most likely, these men were used either for military experiments or for training young surgeons. As in North Korea, once the procedures were completed the "experimental subjects" were killed and their bodies incinerated.
Sometimes in history, events of enormous brutality involving large numbers of people can be successfully kept secret from the general public for long periods of time. For example, in the case of Operation Keelhaul following World War II, hundreds of thousands of men, women and children were forcibly sent back to the Soviet Union by the United States and British governments to a certain death or enslavement in labor camps. It wasn't until Julius Epstein finally exposed this event that the world learned of this atrocity.