The leader of hard-left La France Insoumise party (LFI), Jean-Luc Melenchon, together with writer Paco Ignacio Taibo, holds a conference in Mexico City to launch his new book "Faites mieux! Vers la Révolution citoyenne" ["Do better! Towards the Citizens' Revolution"]. Melenchon reflects on the political situation in France, and says that the Left's "strength" lies in their "determination not to be afraid." IMAGES AND SOUNDBITES