November 9th is one of the most noteworthy dates in German history. Historians identify at least six important events, both celebrated and reviled:
-On this day in 1848, Robert Blum was assassinated in Vienna due to his revolutionary efforts to democratize Germany.
-In 1918, Philipp Scheidemann proclaimed the Weimar Republic.
-Hitler attemped his Bierkellerputsch (Beer Hall putsch/coup) in Munich on November 8-9, 1923.
-Two years later (1925), the infamous SS was established.
-The Nazi anti-Jewish pogrom known as the night of broken glass, or Kristallnacht, occurred on this date in 1932.
-The Berlin Wall fell on November 9, 1989.
For more information about these important German historical dates, here is a selection of news and history sources:
The 9th of November in Germany History – an overview About.com from author Hyde Flippo.
Es lebe die Republik – 9. November 1918 – narrative of the announcement of the Weimar Republic from Deutsche Welle (in German).
Kristallnacht: a nationwide pogrom, November 9-10, 1938 – an encyclopedia entry from the United States Holocaust Memorial Museum.
The BerlinWall: A Division Through Time – a great NY Times feature on the Berlin Wall on the 20th anniversary of its fall in 2009.
Deutsche Welle also has a brief English article about the fall of the Wall here.