With prisons at 180% capacity and a prison population hostile to every aspect of French culture, this is no surprise. TV report below and Gates of Vienna link to story here.
“The secret of all victory lies in the organization of the non-obvious.” -Marcus Aurelius
They forgot to build more prisons. This will not finish well for them.
Heurts entre gardiens de prison et gendarmes / Fleury-Mérogis (91) – France 10 avril 2017
What happens when there is a mass prison break from that prison?
It will reform as hundreds of illegal mosques.