1. Some taxi drivers in Amsterdam are doubling as drug dealers.
2. NCF, since 1902 worlds biggest producer of legal cocaine, at The Schinkelkade, until 1950
NL Wikipedia, A history of Cocaine
3. Notorious hardcore fans of football club AFC Ajax. They sniff, smoke, drink & fight for fun.
4. The Nose (Willem Holleeder), famous Dutch criminal, known for the kidnapping of Freddie Heineken.