All this nonsense about mafias and drug dealers being delighted over the crackdown...
You really have no idea what is happening in the real world.
Head shops have been burned down by drug dealers in Ireland because they were losing money.
It was innovative of Poland to ban shops selling psychoactive substances
No, it wasn't Poland's innovation.
Detain the user of joints, coke, designer drugs, etc. and set him free only after he has divulged his source.
Do you know what would happen to you if you were detained and then set free? You'd be dead.
Only gangsters regard snitches as the most horrible creatures to be destroyed.
Yes and that is the reason why they would kill you, survival.
I think it would be far better to actually educate people on the substances in headshops. Then and only then can people make an informed decision.