The last classification is the anarchists. To the extent that they have an ideology, it is that chaos is the preferable state of society. Mostly, they are simply against any and all authority, even to justifying violence. There is a movement which appears to be behind much of the violence we have seen from the Left in recent years. It is called Blac Bloc. It is called a “tactic” rather than an organization – as befits a group of anarchists.