A group of people, especially within a political organization, which expresses a shared belief or opinion different from people who are not part of the group.
"The new historical drama is such a compelling faction that viewers often forget the line between what actually happened and what was imagined."
A form of literature, film etc., that treats real people or events as if they were fiction; a mix of fact and fiction
The word "faction" comes from the Middle French faction, which was borrowed from the Latin factiō. It originally meant "a group of people acting together," referring to a political faction.