@cinzia: Hmm, I don't remember my acquaintance saying anything about rubbing the lion's nose. In fact, I didn't even know that about the bad luck, though I've lived here for years.
By the way, I also have that book you mentioned above, "Hitler and Munich". Great book. Looking at the old photos of Hitler-related locations and then seeing the same places today, really brings it home to you that those events really happened here, and not too long ago. Last year I was in the police station at Prinzregentenplatz (of my own free will, mind). From what I can make out from the book, this is in the house where Hitler lived during the 1930's, and his apartment would have been just one floor above the room where I was sitting. Creepy feeling.