tell me about their terrorist origins

It seems you might be referring to a specific group or issue, but the question is a bit vague. Different organizations or movements have distinct histories and may be described as having various "origins," sometimes involving social, political, or economic factors that led to their radicalization. If you're asking about a specific group (like al-Qaeda, ISIS, etc.), please provide the name, and I'd be glad to give you a detailed overview of its origins and the context surrounding its formation.