John Lennon famously equated French rock to English wine and it's a sentiment I tend to share. As a general rule the French are better at gastronomy than rock and roll. There are some notable exceptions and Trust is one of them. They received a seal of approval from AC/DC themselves, had their biggest hit covered by Anthrax and shared a musician or two with Iron Maiden. These guys are good.
These guys are down to two original members these days: guitarist Norbert "Nono" Krief and opinionated singer Bernie Bonvoisin. They are the stars of the show and the other musicians on the stage, although talented, are merely the supporting cast.
But band dynamics matter very little. What matters is that for two hours the Élysée-Montmartre travelled nearly forty years into the past only to realise that the message the socially conscious songs like Préfabriqués, Marche ou Crève, l'Élite and Antisocial is unfortunately as relevant today as it was then.
But it doesn't even matter if you share their politics: those riffs, those melodies, those songs have become classics and they are as undeniable today as they were when Bernie still had hair. Nostalgia be damned.