A black bloc can simply be used to administer first aid. It can be a group dedicated toward diverting cop violence toward themselves and not the "peaceful" protest. It can be dedicated to helping people escape cops such as happened during, I think, protests at the Republican Convention -- or maybe it was with Critical Mass in NYC?.
One approach is to demonstrate without a permit or refuse to be penned in by police barricades.
The funny thing is, I reminded him of this on my facebook page 7 weeks ago and there was a huge discussion of this same thing in 199fucking9 on his list, pen-l, and lbo.
Jim Davis The B-Press will find something negative to write about even if the black bloc did not exist. One cannot live one's revolution in fear of the press. peace Jim Davis Ozark Bioregion, USA, Planet Gaia check out my books at: http://stores.lulu.com/store.php?fAcctID=141735