Well you wouldn't have to worry about police here, they don't do that to tourists, only taxis in the airport would try to scam you, but that's easily avoidable, just take a remis, cabify or beat. And they wouldn't know you're a tourist unless you start speaking Dutch or something with other people haha. But yeah Colombia must be better than in the past, so i wish you have a hell of a time mate. Make good use of those Spanish classes i gave you and pick up some girls with our awesome and sexy Argentine accent and slang.