From 1965 to 1973, more munitions fell on Cambodia than on all of World War II Japan, including the two nuclear bombs of August 1945.
You know the John Lennon song 'Imagine'? 'Imagine no possessions, no religion'? That's what it was like in Cambodia. The only thing people had was a spoon, for eating the daily pourridge. And that pourridge was grossly insufficient for the work they were made to do in the fields.
A culture of dialogue is breaking down and giving way to a culture of threats and impunity, you can see the strategy already ... and what you have is essentially the threat of imprisonment in order to control people better.