faction

faction [ FAK-shuh'n ]
[ noun ]

MEANING :
1. (n.) a group of persons forming a contentious minority within a larger group
2. (n.) internal conflict
3. (n.) literature with a mix of fact and fiction

USAGE EXAMPLE 1 :
They belonged to the faction that promoted disruptive activities.

USAGE EXAMPLE 2 :
The Red Army Faction, also known as the Baader-Meinhof gang, killed more than 30 people before breaking up 10 years ago.