It seems that some people are still fighting the propaganda battle that once raged between Innocent IV and Frederick II, for instance this article about Saint Rose of Viterbo.
Little twelve year old Rose preached against the Imperial occupation of the Papal city of Viterbo. She even apparently predicted the death of Frederick II and kept the morale of the people going during the Imperial rule of the city, which lasted from 1240 to 1250.
I find it interesting that this article, which was posted earlier this year, is written in such partisan terms. For instance there is great shock that Frederick II wanted to occupy poor little Viterbo.