Much of what might be said about Chris Hedges' recent column blaming the "Black Bloc" for Occupy's real or imagined woes has already been aptly handled elsewhere.
American Leftist: Doctor Hedges Misdiagnoses the Decline of Occupy
Pink Scare: Against Hedges on the Black Bloc
The Wild Wild Left: Perspectives On Hedge's "Cancer in Occupy"
i cite: Interview With Chris Hedges About Black Bloc | Truthout, David Graeber: Concerning the Violent Peace Police. A Response to Chris Hedges (nplusone), and To Be Fair, He Is a Journalist: A Short Response to Chris Hedges on the Black Bloc | Revolution by the Book : The AK Press Blog
That should cover enough of the territory, I would say. Personally, I tend to be pretty agnostic with regard to the tactics used in any resistance effort. I do find it rather bourgeois to condemn acts of counterviolence (a term I am borrowing from the German New Left of the late 1960s) or even nonviolent direct action given that the capitalist system itself is inherently structurally violent. To be passive to the point of not resisting at all has been practically suicidal for the Left. We should know that already.
Perhaps I'll say more if time permits. If not, the links above should provide a useful enough starting point. I think they'll more than adequately clear up a few misconceptions that Hedges and his less critical followers seem to have. In the meantime remember that "divide and conquer" is the enemy - especially in these turbulent times.