This book analyses radical and extreme democratic theories and ideas in their historical context, interlocked with a critical description of historical institutions and experiments that help to evaluate the theories.

Paul Lucardie was affiliated with the Documentation Centre on Dutch Political Parties at the University of Groningen, the Netherlands, from 1979 till 2011. He has done research on Dutch parties, and especially new and extreme parties, as well as on ideologies.

1. Definitions of extremism 2. Revolutionary or libertarian municipalism 3. Varieties of radical democracy 4. Radical Democracy in Action I 5. Radical Democracy in Action II 6. Conclusions