Common sense on drugs is finally getting the upper hand over ignorance, fear and dogmatism.

He fled New Zealand 12 years ago to dodge drugs charges, now he's been found guilty of a brutal knife attack in Scotland.

While Zac Guildford gets forgiveness and life coaching, run-of-the-mill crims get locked up and ignored.

Police say an alleged drug syndicate they have busted may have been responsible for selling pills that caused users to have seizures and to act so aggressively they needed to be sedated.