Fake Police Arrest
Can happen to you being stopped by a Brazilian police office while you walk in the street.
That police officer will tell you something crazy like You are carrying counterfeit bills.
They check your pockets and somehow they really find these fake bills. This happens because these guys work has a team. If you make a purchase you could get this fake money from a guy. What you should do is immediately contact with tourist police. Tourist police speak English and will help you.
Tourist police
24-hr. contact line
tel. 021/3399-7170