Excuse me? None of these attacks are being committed by immigrants?  You sir, are a major problem in this country.  Ignorant lefty fools like yourself are too scared or unwilling to speak the truth, that or just stupid.  Almost every attack in Germany this year has been committed by an immigrant.  And there also happens to be another common denominator in these attacks.  The attackers happen to be Muslim.  As Mike said, pull your head out of the sand.