Complex sentence: With the end of the Nazi regime in May 1945, the "Horst-Wessel-Lied" was banned, and the lyrics and tune are now illegal in Germany and Austria except for educational purposes.
Split into simpler sentences: With the end of the Nazi regime in May 1945, the "Horst-Wessel-Lied" was banned. The lyrics and tune are now illegal in Germany and Austria, except for educational purposes.