When is it okay to expel a 'Palestinian' from their home?

Israel has been lambasted in the world media time and time again for demolishing illegally constructed homes in the City of Jerusalem. But when is it okay to expel a 'Palestinian' from his home? When it's done by the 'Palestinian Authority,' of course. Some 400 Palestinian families are being sued by the Palestinian Authority’s Land Department for building thatched clay homes and tents on