People who make predictions about anything only speak for themselves, not the entire ideology they profess to follow.
Throughout most of the 20th century, many atheist scientists promoted eugenics and scientific racism.
Edit: I only mention scientific racism as an example of how ANY belief can be twisted and interpreted in ways that are dangerous, not just religious beliefs. In this case, the theory of evolution was used for a harmful purpose.
Edit: Yes, you did use the word "some" in your question. It's just that Harold's prediction is always being used as a hammer to beat Christians over the head with.