On 28 April 2008 Ondřej Císař has presented his paper "Political Activism in the Czech Republic" at the Workshop on Contentious Politics at ISERP, Columbia University. Led by Charles Tilly, this workshop has been active in various forms over the past thirty years and many important scholars studying political mobilization and conflicts have presented their research there. In recent years, those have included, among others, Ch. Tilly, S. Tarrow, J. Goodwin, R. Licklider, W. te Brake and Ch. Davenport. The paper can be downloaded in PDF form here.