I don't think they'll come for all of us, at least not at first. They will make a few examples--Jim Robinson types, people who stuck their neck out. They will want to chill everyone else, and shut the sites down. But there will be some people for whom it is personal with the B-Ho fascists, and those who posted those pics of his mom will be among those. Larry what's his name is another.
He wants to make a Greater Cambodia of us.
In the end very very few with a college education, or even anyone who wore that infallible sign of an 'intellectual' -eyeglasses- survived.
Most of the non-intellectuals died too. It turns out shop keeps, bus drivers, plumbers and street sweepers don't make very good instant farmers.
Give Pol Pot his due, he did achieve that ever popular liberal/greenie dream of depopulating the cities and getting everyone close to the soil.