How do you construct a political agenda? Co-participation patterns of social organizations in 2009-12 chilean protests

This paper analyse the network of social demonstrations of the recent "Chilean Student Winter" occurred between 2009 and 2012 by studying the co-participation patterns of social organizations using social network analysis. We describe main social actors and study the topological characteristics of the networks formed through social organizations, demonstrations and motives. Also, we study the change in the density of the network of demonstrations due to the rise of the ÒChilean Student WinterÓ at 2011. We found that in spite that the ÒChilean Student WinterÓ was mainly a student revolution, organizations of workers are the protagonist of this period according to the network analysis. Additionally, there are a significant change in the global cohesion or density of the demonstrationÕs network at 2011-12 in relation to 2009-2010.