Amsterdam is 'positioned' as a liberal, tolerant and progressive place, where people who are often seen as not being part of mainstream society: drug addicts, lonely people, perverts, are welcome. It is interesting to note though that gay people are also included in this list. (You might want to reflect on how gay people are represented here.) Moreover, it is insinuated that the representatives of law and order, the police, are showing an extraordinary liberal, some might say criminal, attitude by showing tourists where to find prostitutes or drugs.