Ok here's what I'm thinking; Ninja(Ninjitsu) are not assassin's.
They had been poor country folk originating from Japan and also China.
They trained themselves in this art not for assassinating but to fight off the Samurai who had been taking there land from them.
They had however assassinated people/Feudal lords (This is most probably how they had been put in the same category as assassin's.) etc.
Assassins had no intention of harming the innocent only their specific target. These people are assigned to kill certain men who are a threat to society Etc.
Ninja's and assassins are the same in some areas like; they use stealth, they can adapt to their specific enviroment even if they are compramised. and etc
EDIT: Razaguin, meet me in black belt Aikido - and no Cobra is only banned for a day, not for ever
Last edited by AikidoKP; May 7, 2010 at 08:48 AM.