I'm from France and I used to go to a lot of squats, and what you say is not true. I don't live in squats but I know a girl who does. She was rejected by her parents because she is lesbian. Even in uninhabited houses, when the police comes, every squatters are out immediately. Even if they have no rights to do it, and the law is supposed to "protect" squatters. I witnessed police throwing tear gas and smoke grenade to get squatters out. And when they are out, the police acts as if nothing happened.