1. Bismark would have never supported Germany's behaviour leading up to WWI. The people in charge thought they had the genius of Bismark, but had a bit more in common with Nero.
2. The primary 'hate-fueled racist agenda' in WWI was the Serb-Austrian relationship... And that was less about direct racism, and more about imperialism. (Which the Entente was completely guilty of.)
Of course it was for WWII but I thought Bismark was more into empire building than out to get rid of anyone except the Germans...