With archival footage from INA commented on by political figures, this documentary traces the history of the debate that has divided the left over secularism, from the emergence of a militant Islam in the late 1980s.
| Actor | Role |
|---|---|
 Sophia AramSelf | Self |
 Jean-Louis BiancoSelf | Self |
 Caroline FourestSelf | Self |
 Jean GlavanySelf | Self |
 Jean-Luc MélenchonSelf | Self |
 Mimouna HadjamSelf | Self |
 Edwy PlenelSelf | Self |
 Stéphane PocrainSelf | Self |
 Manuel VallsSelf | Self |
 Patrick WeilSelf | Self |
 Marie-George BuffetSelf | Self |
 Philippe ValSelf | Self |