Your own link said it 33%, so not the majority.
A union has no obligation of "independence".
Being member of a union does not mean you agree with everything, just that you think it's the best to defend your interests.
The "Fête de l’Huma" is not the Communist Party's annual conference but it is indeed left leaning.
There is no need to write communist in all caps, it's not an insult.
For your last point you'll need to provide sources.
Yeah, it's not communist, it's just "left-leaning", organized by L'Humanite, a communist newspaper (who calls itself so), known for amongst other things, for grieving the "great comrade Stalin"'s death on its front page dated 9th March 1953. :o)
And sure, belonging to a communist-leaning syndicate which publicly takes political stances (one being to say "dont vote for Sarkozy") has strictly no influence on how you deliver sentencing, nor does the famous incident "mur des cons" in 2013.
Man, the communist party (and the communist ideology) in France is pretty much dead today. They’re not even that much to the left today. They have no power and their boss has no social credibility outside of its party (see “Fabien Roussel n’est pas un camarade” songs)
Your claim that the judges are red is a popular right wing fantasy
