Earlier quoted context omitted.
In the case of western Europe, we should care because we don't have internal OR external border controls, and Turkey is a neighboring country with a lot of refugees to dump on us. I wish I understood why there isn't a move to reinstate border checks in the Schengen area. It seems ludicrous to me to keep internal borders open when it is clear that the external borders have failed.
All borders should be abolished. No human being has the right to tell any other human being where he can or can't go (with the exception of trespassing on private property, of course).
This ought to be removed too, along with the whole concept of property.