This article by Nato Thompson discusses tactical interventions throughout history, and what it means to be a political artist.
This is the revised film project video that has changed based on critiques from my peers, which include...
Marshall McCluhan in his article, The Medium is the Message, is primarily arguing that invented technology, from painting to electricity and typography, are the messages themselves, not the content of the communication. For example, rather than artists using a canvas as a medium for a certain message, the actual message is the paint itself, rather than the intention. The author refers to electric light quite a bit to explain this phenomenon. He claims that light is not noticed until it is used to spell out a brand name. Here, light is the medium.