Horst-Wessel-Lied was the co national anthem of Nazi Germany between 1933-1945 until it was banned after the defeat of Nazi Germany. This was also the anthem used by the NSDAP lead by Adolf Hitler. In the small 12 years that Hitler lead the German Nation he killed 6 million Jews and millions of others.
Disclamier !: I am not a Nazi in any way and do not approve or support any of the things the NSDAP did or Adolf Hitler, this is purely for educational purposes.