Insurgent groups are organized factions that use armed conflict to challenge established governments or authorities. They often operate in regions where political, social, or economic grievances exist, seeking to gain control or influence over a territory. These groups may employ guerrilla tactics, propaganda, and community support to further their objectives. Typically, insurgent groups arise in response to perceived oppression or injustice, aiming to bring about change. They can vary widely in ideology, ranging from nationalist movements to religious extremism. Examples of such groups include the Taliban in Afghanistan and the FARC in Colombia.