I'll just mention, since this is Pprune, that it certainly appeared from the French TV pictures that I've seen that many of the rent-a-mob involved in this very nasty looking piece of direct action were carrying CGT banners, the CGT being a very large (largest?) French general workers union. There was no sign of any pilot's Union (e.g. SNPL) involvement.
https://fr.wikipedia.org/wiki/Conf%C...ale_du_travail