We all know that governments keep secrets from their citizens. In an ideal world, we like to think that all of these lies are necessary to protect national security or avoid a panic. In most democracies, we can hope that the government will eventually declassify these secrets. The US government has plenty of secrets of its own and, thankfully, it has a relatively good record of declassifying material when it no longer poses a risk to security. Buried in these declassified files, however, are gruesome, terrifying, and outright disturbing revelations of what the most powerful nation on earth has gotten up to over the years.