I understand your point about unified, but using the term in it's academic is confusing to some of laymen. Of course, if you're writing for people who are much smarter than me, you have nothing to worry about.
Take a hypothetical group who believe that God doesn't want "infidels" to live in Area X. Some might be willing to negotiate with the "infidels" others might insist that ethnic cleasning is the only option, but they share the same religious ideology.
Or take Reagan Democrats. Ideologically they're Democrats, but they are very different from people who'd never vote for a Republican no matter what.
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