At 6 a.m. on 13 October 2011, DEA agents entered the Redwood Valley home of Matt and Courtenay Cohen, the founders of the Northstone Organics collective, and cut down all 99 of its cannabis plants with chainsaws.[1][2] Each plant carried a zip-tie showing it had been authorised and inspected under the Mendocino County sheriff’s cultivation programme, and the collective supplied about 1,700 members holding physicians’ letters.[1]

The agents handcuffed the couple for eight hours while they searched the house, but made no arrests, and the reports say charges were unlikely.[1] The raid came less than a week after California’s four US attorneys announced a coordinated enforcement campaign against the state’s medical marijuana sellers and their landlords.[1][2]