[ideonexus]

The objections to evolution on the grounds of racism and eugenics were in Bryan's closing statements. These were never read in court because the defendant did not give a closing argument. He never uses the term "eugenics" but that's clearly what he is referring to at times, especially in his references to Nietzsche:

https://profjoecain.net/last-message-of-william-jennings-bry...

At a public speech given right after the court case and just before his death, one of his arguments against evolution is because the theory was being used to object to vaccinations, asylums, and many medical treatments for fear that these measures were allowing the unfit to survive:

https://bertie.ccsu.edu/naturesci/evolution/unit15scopes/Bry...

To be clear, I want to reaffirm that I do not agree with the theological arguments and absolutely accept the Theory of Evolution. I'm only sharing this information because the debate over evolution was very much about ethics as it was about science.