Repeat after me, prohibitions never work. The simpler the thing being prohibited is to do or create the more miserably the prohibition will fail. Cannabis, being a weed, is very easy to grow and therefore the prohibition against growing, using, and selling cannabis was doomed to fail. Supporters of cannabis legalization in Gottingen, Germany demonstrated the futility of banning the weed:
Cannabis plants are sprouting up all over a German town after pro-marijuana supporters planted tens of thousands of seeds last month.
Supporters of the group A Few Autonomous Flower Children spread several kilograms of seeds around the university town of Gottingen last month.
[…]
Scores of the plants have sprouted all over the town this week to the fury of the local police and council.
A website shows dozens of photos of the cannabis plants blooming in public parks, allotments, gardens and window boxes all over town – with some even growing outside the local police station.
Police have been ripping out the illegal plants on sight but the sheer number of blossoming plants became noticeable in the past week.
The act of planting cannabis seeds throughout a territory has been a form of civil disobedience discussed by many but executed so effectively by few. Hopefully the success experienced by A Few Autonomous Flower Children will encourage individuals in other cities to perform similar facts. Nothing would demonstrate the futility of cannabis prohibitions so succinctly as millions of plants growing in every major city. If nothing else, such actions sap resources from the state by forcing it to redirect police resources from writing citations and shooting dogs to ripping up cannabis plants. The more time the police waste ripping up weeds the less time they have to cause actual harm to people.