there's a big difference between the legally enforced social system of separating the races, and a one day non-mixing event for a black feminism festival.
but hey, France is famous for not understanding things conceptually....(looking like America and Britain here France, but that's no surprise. On some things, these people share some things in common.)
So by that logic, white nationalist are allowed to hold a "whites only" event for a day because it's just an "event" and not legally enforced. Please. This is blatantly discrimatory.