In 1349 the customers on the guilds unsuccessfully rebelled in opposition to the patricians inside a Handwerkeraufstand ('Craftsmen's Uprising'), supported by retailers plus some by councillors, leading to a ban on any self-organisation of the artisans in the town, abolishing the guilds that were customary somewhere else in Europe; the https://sluiterklik.nl/voordelen-van-graffiti-workshops-ontwikkel-vaardigheden-creativiteit-en-gemeenschapszin/