I found this reading by Pablo Helquera-http://pablohelguera.net/2011/11/education-for-socially-engaged-art-2011/ to be very important in considering art as a social action.  The references to the Reggio Approach http://reggioalliance.org/ movement in education are so important when looking at the power of a new idea in one city that actually grew into a  global change in early childhood education.  It is important to recognize the power of a small movement that is an answer to a problem that comes at the right time, the right place and is completely logical. It grows like a seed that has all the right components.  The roots reach out- the leaves educate, the stem supports. Educational systems that must change and governmental systems that must change can be put in a parallel comparison when studying the possibilities of their revolution.  They

must continually try something different to change, to exist.