Most anarchists and some Libertopians are actually socialists who want to crash the system and rebuild utopia. To find Libertopian utopia read: Brave New World
You can find the whole thing online
Pretty broad statement.
Absolutely! It's a highly slandered ideology savagely used by the left as a mechanism to bring about a more severe form of totalitarianism.
In perspective though, "leftist anarchists" are not truly anarchists, they are socialist terrorists trying to bring about a change in government through acts of reprehensible violence.