I would agree that we would like the values of scientist to mirror the values of the general public (although it is easy to see how different values may lead to

I would agree that we would like the values of scientist to mirror the values of the general public (although it is easy to see how different values may lead to a different likelihood of becoming a scientist). However political beliefs are a combination of values and factual beliefs. For example, consider gun control. Part of the debate is a value debate on who has the responsibility of protecting the people (if you believe that it is the government's responsibility, you are less likely to be pro gun than if you believe it is an individuals responsibility). However, there is also a factual debate on if private ownership of guns actually protects people.