Chiang Rai. Lived in Chiang Khong last year. Generally I am super happy with how stuff works here. If I didn't have some insight into this problem through locals (I'm pretty integrated - I don't know any farang and spend all my time with Thai people) I wouldn't even be aware. We will be moving to Phitsanouk soon and I am terribly afraid it will be similar to the south where it's a part of everyday life.