I can write novels about this. They just make money that way. I get pulled over a lot. They find something , they even use tasers if you try to get away, it is funny. These kids were probably doing something wrong and instead of making them pay money they had them do that, I think that is great to be honest! It is very corrupt here , so the police make money that way too. It is the safest place I have ever been but corrupt. When I go to the border towns, I always slip 100k into my passport and tell them that is for them and they take it and say thanks.. That is $4.25 That way, they process me faster than others and never mess with me.