The G8 protestors are a different animal. Whilst most of them are legit and genuinely want to creatively express their opposition to G8 policies, there is a dedicated cadre within that group (who also come to protest IMF and World Bank meetings) whose sole purpose is to wreak mayhem and destruction. There's a huge difference between hanging banners on the fence at Parliament and ripping out street signs to batter public (and private) property.