Based on what I have read in various media reports and what was being presented on CTV and CBC news channels, I think there were four types of "social protest groups". Group one was the traditional 1960's style walk, talk,and sit "we-shall-overcome protesters". Group two was the extreme black-hooded we are not-going-to-take-it-anymore throw a brick protesers. Both these groups have clear political/social agendas, but very different approaches to publizing their causes. Group three were throw a-brick-start a-fire anarchists. Their only social goal was to instigate upheavaland change. They want social change that is loud, active, but unfocussed. The last group were on their bikes and skates, or just hanging around trying to be actively part of the scene or at least be seen with the group. They defied authorites as part of social entertainment event as opposed to a social goal. If it had been a after a NHL play-off game they would have been there raising hell too.