I'm definitely not saying Le Pen is innocent.
Navalny was found guilty of multiple crimes. https://www.theguardian.com/world/2023/aug/04/russian-court-extends-alexei-navalny-sentence-in-penal-colony
Being charged a criminal is subject to the court system and if that ever gets corrupted, democracy is over.
Many people here say that it's not the same in France; that the French court system has no evidence of corruption. I agree. I prefer to have laws in place before they are needed, rather than too late.
It's problematic at least. The Communist party is also banned in Germany.