I've just read an article about the memorial stone of Adolf Herrmann. The following sentence is written on it:
Unserem unvergeßlichen Bezirksführer Adolf Herrmann erschossen auf dem Heimwege vom Zahlabend in der Nacht zum 23. September 1906 durch den Gendarmen Jude
However, I don't get what they mean with "Gendarmen"? It seems to be somehow offensive (antisemitic I guess) against the perpetrator according to the article (German Wikipedia).