Inscription: THE SECURITY OF REGULATION. 1. You must answer accordingly to my questions - Don't turn them away. 2. Don't try to hide the facts by making pretexts this and that You are strictly prohibited to contest me. 3. Don't be fool for you are a chap who dare to thwart the revolution. 4. You must immediately answer my questions without wasting time to reflect. 5. Don't tell me either about your immoralities or the essence of the revolution. 6. While getting lashes or electricification you must not cry at all 7. Do nothing, sit still and wait for my orders. If there is no order, keep quiet. when I ask you to do something, you must do it right away without protesting. 8. Don't make pretext about Kampuchea Krom in order to hide your secret or traitor. 9. If you don't follow all the above rules, you shall get many lashes of electric wire. 10. If you disobey any point of my regulations you shall get either ten lashes or five shocks of electric discharge.
In 1975 the Khmer Rouge turned Tuol Svay Prey High School into a prison and interrogation center known as Security Prison 21. It became the largest detention center in the country, and out of almost 20,000 prisoners detained there only seven survived. When the Vietnamese liberated Phnom Penh in 1979, they turned the prison into a genocide museum.