When Die Linke joins the Social Democrats as junior partner, its vote drops; the reason is simple: the left abandons its role as fighting opposition.
This date marked an attempt to kill Adolf Hitler and overthrow the Third Reich. That too should be remembered.
Seventy-five years ago this week, in Operation Barbarossa, German forces suddenly invaded the Soviet Union.
Most alarming, since Germany is the strongest, most central European country, is the strength of its far-right Alternative for Germany.
Europe today, though not dead, is in deep disarray, heart-rendingly for very many and menacingly for the world.
"Shoot them down!" - That's one answer to the problem of refugees and immigrants flooding into Germany, clearer even than any Trump-wall.
The German political scene is in turmoil and such turbulence has opened the way to healthy change, but now, in my view, it can lead to great dangers.
It was a day to remember, a date for the record books: It marked a surprising development in German politics!
After 25 years of unification, annexation, or occupation, the only safe predictions in Germany still seem to be the ones about lunar eclipses.
Germany has suffered under a heat wave and damaging drought. Now thunderstorms are predicted. Can any parallels be drawn?