"that the impious presumption of legislators and rulers, civil as well as ecclesiastical, who, being themselves but fallible and uninspired men have assumed dominion over the faith of others, setting up their own opinions and modes of thinking as the only true and infallible, and as such endeavouring to impose them on others, hath established and maintained false religions over the greatest part of the world and through all time;"

-from the Virginia Statute for Religious Freedom, drafted by Thomas Jefferson

Does that not describe evolutionism in exceeding detail?

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-Evolution as Theory and Fact
From: Answers in Genesis

In practice, evolution is neither fact nor theory. A theory is a well-supported—but falsifiable—body of interconnected statements that has explanatory and predictive power (e.g., the theory of gravity). Evolution, however, does not fit this definition because it is assumed prior to the research being conducted and because it assumes many one-time events that can neither be tested nor verified (nor have eye-witness confirmation).

Evolutionists fit all evidence into the framework of evolutionary naturalism (the belief that there are no supernatural causes). As a corollary to this, evolution cannot be used to make predictions because all results are filtered through the prior belief in evolution.

Evolution is better referred to as a tenet of naturalistic philosophy or humanism (a belief system). Most evolutionists presuppose a worldview that demands the removal of any supernatural agents acting in a knowable way (e.g., miracles, special creation). Calling it a theory and/or fact is a disingenuous attempt to hide the underlying beliefs and to discourage debate by ridiculing those who disagree.