How it worked in Amsterdam in the 90ies is that the government also started to provide the drugs (Methadon) for the heroin addicts… The addicts were responsible

How it worked in Amsterdam in the 90ies is that the government also started to provide the drugs (Methadon) for the heroin addicts… The addicts were responsible for lots of petty crime in order to fund their habit (stealing car radios, muggings) and this decreased. So this helped make the city a more liveable place, not just for addicts.