wrong agent fallacy, n.All

Wrong-agent fallacy (n.) keeps ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠atrocities out of the canon of terrorism simply because the wrong side committed them: we did it, so it does not count.