Activism as a reply to the crisis of the shared

This rigorous thesis is a study on crisis of a shared world. Furthermore, it brings some strategies how to deal with it. In the first part the author introduces the shared world and analyses its existence conditions, which are physical public space, the public and media public space. At the end of the first part, the author characterises civic society as a result of an ideal combination of those three above mentioned conditions. In the second part, the author illustrates the crisis of the shared world on selected phenomena of physical and media public space, the public and civic society. The crux of his work is in presenting three main types of activist groups (social movements, non-profit organizations and individual artists and artist groups) and analysing chosen strategies focused on how to recapture the shared world through physical and media public space. Physical public space - direct action, reclaim the street, critical mass, guerilla gardening, flash mob, street art, culture jamming, etc. Media public space - alternative media, cyberactivism, hactivism, mass virtual active action, culture jamming, etc