the quote is missing what happened after the Platzpitz and later the older Letten train station were cleared: heroin use was decriminalised - not legalised - but only in controlled locations under supervision from medical staff and social workers. It seems that solution helped in multiple ways: - no people using heroin on the streets - no overdoses - drug users became less criminal because they didn't need as much money to finance their use - the medicalisation of heroin use made it less appealing to new users by removing the rebellious aspect