The taxi sector in Amsterdam is very much like the mafia, so this isn't really surprising. Taxi drivers in Amsterdam are known for intimidating competitors and

The taxi sector in Amsterdam is very much like the mafia, so this isn't really surprising. Taxi drivers in Amsterdam are known for intimidating competitors and extorting tourists. See for instance: http://www.at5.nl/artikelen/155696/taximaffia http://www.at5.nl/artikelen/155696/taximaffia