Radical Communications explores unauthorized messages we see in the cities we live in and their impact on the construction of social reality. Michael Tsangaris treats the city as a text and examines the political slogans, graffiti, and street art of Athens as complex visual signs in an alternative communication system. He argues that the legitimacy, aesthetic value, and social acceptability of these expressions depend on the time, place, and social group or individual that interprets them. Finally, his analysis reveals the contradictory character of the contemporary city. It shows a city of...