Bardot is unhappy about what she terms the "Islamisation of France." She's already been convicted and fined four times for negative comments about Islam. This time, she's on trial for stating, "I am fed up with being under the thumb of this population which is destroying us, destroying our country and imposing its acts." One of those acts is the ritual slaughter of animals, which Bardot (an animal rights activist) particularly abhors.
Whether Bardot is right or wrong, nationalistic or xenophobic, doesn't really matter to this discussion. What matters is her lack of freedom to say what she thinks.
Thankfully we still have the right to say what we think in this country. We should stay vigilant so that we always will.