There are two types of Anarchy. There are those anarchists who want a very limited government for its own sake, and then there are those who wish to cause chaos in order for someone else to put in their own order. #OWS are the latter.
Limited government is not what I would call anarchy. It is what the founding fathers would call a necessary evil. The type of anarchy that is used for destroying the established order to bring about a new one is called revolutionary. It’s what liberalism represents if this new order is socialist by nature. Hitler described himself as a revolutionary socialist, by the way.