**Key Points:** - Governments ran secret experiments on civilians, soldiers, and patients without consent - Programs were officially funded and government-sanctioned — not fringe operations - Victims included children, the terminally ill, and ordinary citizens going about their lives - Files stayed classified for decades, only surfacing through journalists and investigators - Most perpetrators faced zero accountability They weren't mad scientists in shadowy basements. They were credentialed professionals with government funding, filing paperwork and holding meetings — while secretly injecting patients with plutonium, spraying bacteria over major cities, and using soldiers as chemical test subjects. The people running these programs counted on silence and time. For decades, it worked.