Occupiers, Stop Using Consensus! (tags)
Consensus process (the idea that a group must strictly adhere to a protocol where all decisions are unanimous) is the absolute worst idea that has ever been introduced to the activist community.
...if anything is essential to anarchism, it is the idea that social decisions are to be taken by everyone affected, and that this inclusion must involve substantive participation of each in deliberation and decsion-making. Thus a dispute on the nature of such participation is a dispute about the very essence of anarchism.