I want to know the answer to the following question:
Why were political radicals such as Ernst Haekel so interested in On the Origin of Species?
All the background I'm provided with is that "Evolutionary ideas, although not natural selection, were accepted by German biologists accustomed to ideas of homology in morphology from Goethe's Metamorphosis of Plants and from their long tradition of comparative anatomy.". Is that enough to answer the question?
Answer: no