Have you not heard of the Crusades? Or the Inquisition?

[https://en.m.wikipedia.org/wiki/Joan_of_Arc] [https://en.m.wikipedia.org/wiki/French_Inquisition]

It did somewhat calm down once the Republic’s formed, but even today there are large conflicts with ‘Normal’ French society and the large scale ghettos from (typically Muslim) immigrants and refugees in France.