Insurgent political parties that are profoundly dissatisfied with the dominant party’s reign and justificatory ideology always produce factions whose views and aims differ as greatly from each other’s as they do from the dominant party’s. Although these factions ignore their own disagreements for the sake of defeating the dominant party, their disagreements inevitably come forward upon victory.
Setup Ideas
When an insurgent party forms that is angry at the dominant party and its ideology, that insurgent party always produces factions whose goals and views are as different from each other's as they are from the dominant party's.
They ignore these disagreements for the sake of toppling the dominant party, but then their disagreements inevitably come forward upon victory.
Evaluate
Since this is prefaced by a Conclusion indicator like "Therefore", we're drawing a conclusion from these claims. In other words, we're making a supportable inference (like on Most Supported).
The first and second sentence both had causal/conditional words. Insurgent parties always produce factions Victory over dominant party inevitably leads to disagreements among factions coming to surface.
They don't quite chain together, but they do both mention these factions within the insurgent (and eventually victorious) political party.
Fill-in-the-Blank Goal
It sounds like we're being led up to a moment of, .
When they had that common enemy, they ignored their disagreements with each other (even though those disagreements were just as vast as those with the dominant party).
So once that common enemy is gone, they'll start bickering with each other.