Because theres freedom of movement within the EU and we have had millions of muslim migrants that have entered the EU thanks to Germany. The only way to protect the borders is to leave the EU
Millions...thanks to Germany...
You do realise that the wars your f’in country fought with the Americans, which have destroyed half of the Middle East, are responsible for those refugees/Muslims?! Not Germany, you narrow minded people.
And all that after you’ve colonised half of the planet for centuries. Ignorance is bliss I guess. It’s probably better guys like you just stay on your island and never leave it again.