17. Protestant groups within the United States called evolution a religious belief, not a science
In the 20th century, fundamentalists and creationists argued that evolution was not a proven science, but a theory unproven, and thus belief in evolution was in itself a religion. By establishing evolution as a religion, it is teaching in public schools was a violation of the Establishment Clause in the Constitution, which prohibits the state support of one religion over others. Teaching evolution meant teaching creationism – the story recounted in Genesis – as well. Evolution as a religion was just one of many arguments put forward by opponents to Darwin’s scientific findings.
From the publication of On the Origin of Species, the argument was put forth in the United States that Darwin was purporting an unproved theory which was in direct conflict with the infallibility of the creation account in the Bible. By the 1920s Bible literalists in the American south and west had successfully created laws that prohibited the teaching of evolution in public education. Some of the laws remained in effect until the late 1960s, when the Supreme Court of the United States decided they were a violation of the Establishment Clause, since they specified that the Genesis account was the sole authority on the creation of the universe and all which it comprised.