I think designating a group "Always Lawful Good" can be a problem too as it can be used to justify abhorrent behaviour "ok Elves do commit genocide but they are Good so it's ok!" I don't think Gygax designating his Dervishes LG was intended as a comment on 19th century Mahdists and the ethics of Jihad, but it did give me a double take. As did BECMI's Desert Nomads, with the Lawful/Good Sunni-Analogue Alasiyans and the Chaotic/Evil Shia analogue Thuleans with their Master depicted as Ayatollah Khomeini.