What is ideologue? How to use in English

The term "ideologue" first appeared in the late 18th century in France, during the time of the French Revolution. It was initially used to describe individuals who promoted new ideological concepts and beliefs, often associated with the Revolution's radical and politically progressive ideas. An ideologue was someone who believed that reason, morality, and individual rights should form the basis of society and government, rather than traditional hierarchies and religious beliefs. The term's origins are derived from the Greek word "idein" (to see or perceive) and the French word "logique" (logic or reason). Thus, an ideologue is someone who perceives or adheres to a particular set of logical and ideological principles. Today, the term "ideologue" is sometimes used in a pejorative sense, referring to individuals who are overly dogmatic and inflexible in their beliefs, especially when those beliefs are politically partisan or extreme.