- Argentina
- Belgium
- Central America
- Chili
- Czech Republic
- Italy
- Mexico
- Spain
- Sweden
- Switzerland
- The Netherlands
- United Kingdom
- , Spokesperson
- , Spokesperson
- Almeida, Paul
- Almeida, Paul
- Andretta, Massimo
- Anduiza, Eva
- Bosi, Lorenzo
- Cisar, Ondrej
- Cristancho, Camilo
- Damen, Marie-Louise
- Della Porta, Donatella
- Eggert, Nina
- Giugni, Marco
- Gomez, Cristina
- Grasso, Maria
- Inclan, Maria
- Ketelaars, Pauline
- Klandermans, Bert
- Milan, Stefania
- Navratil, Jiri
- Olcese, Cristiana
- Peterson, Abby
- Rainsford, Emily
- Reiter, Herbert
- Rodriguez, Mauro
- Rootes, Chris
- Rossi, Federico
- Sabucedo, Jose-Manuel
- Saunders, Clare
- van Leeuwen, Anouk
- van Stekelenburg, Jacquelien
- van Troost, Dunya
- Vrablikova, Katerina
- Wahlström, Mattias
- Walgrave, Stefaan
- Wennerhag, Magnus
- Wouters, Ruud
Publications
- Abby Peterson, Mattias Wahlström, Magnus Wennerhag, Camilo Christancho and José-Manuel Sabucedo. May Day Demonstrations in Five European Countries
- Abby Peterson, Mattias Wahlström, Magnus Wennerhag. Swedish trade unionism: A renewed social movement?