Are there any studies that attempt to analyze the demographics and/or motivations of street protesters?
For example: Are protesters concerned citizens that agree on something after an individual critical thinking or a mass of people with reasons to protest and nothing better to do?
This depends on other elements, for instance: Are protests the best way to obtain some change or the last pacific refuge?
Basically I'm searching for references like this but better, making observations and trying to explain why, since the whole analysis itself is unlikely to fit well in this format.
Thank you.