Khmer Rouge

I watched a programme called "Cambodia: fields of hope" on television a few weeks ago.

I don't know how old this programme is. I was surprised to hear the narrator say that the film-makers were accompanied by the police; especially when they travelled out of Phnom Penh, because the police felt the need to protect them in case the Khmer Rouge rebels attacked them.

The documentary said that the Khmer Rouge era is over, but the risk was still around.

Is this still true? Or is the documentary simply dated?