Board Thread:Naruto Discussions/@comment-18016240-20160208110013/@comment-3568954-20180111211822

tobirama's fears were not at all paranoia, they were 100% founded in logic. its an irrefutable fact that the uchiha of old were bound by the curse of hatred, its a literal mental curse. if the uchiha existed in real life, they wouldn't have been pushed to the back of a city and made into police, they would have all been locked up in the looney bin.

the uchiha clan were as tobirama put it, a clan possessed by evil. we later find out that this is 100% true when we find out that the entire situation was created by black zetsu who influenced indra into hating his brother and creating an eternal struggle between the two clans. his hatred for asura was inherited by his children and there children and so on