[vin-one]

crime rates dropped and violent criminal arrests increase in England when they stopped busting people for minor amounts of MJ. So I guess I have proven my point. It certainly matches your one example of the netherlands.

[4Freedom]

No, your statistics from England prove nothing unless we know that incidents of violent crime didn't increase as well.

Arrests will go up, if there's an increase in incidents (probably as a result of more pot being smoked in public).