Considering Grass's entire post-war history and literary work, calling him an anti-semite is retarded.
If we adopt the attitude that not supporting Israels occupation of the West Bank and Gaza is antisemitic, I guess you could call him that. Of course sensible people aren't moronic enough to do so, but some people still adopt this attitude. Of course if we completely ignore context, Grass is also a very easy target as most other young German men and older teenagers who survived WWII, more or less every German male born between 1915 and 1930 served in the military. You can just see the Pope as a other example, who is blamed for being (quite involuntary) member of the Hitler Jugend and his service in the Wehrmacht.
