As a Jew who grew up in Nazi Germany in the years leading up to World War II, I can understand her rage. But I think that whatever Mr. Grass has said in election campaigns (usually as a loyal Social Democratic speaker) or in his powerful novels, all essentially on the present or the recent past, retains its value.
New York Times 8/20/2006 [Another opinion, same place, here]
Peter Gay = great historian of European mentalities.
Gunther Grass = greatest novelist of Post-WWII Germany.