User blog comment:Master Sima Yi/Assassinews 03-03-'13 — Assassin's Creed IV: Black Flag trailer and screenshots/@comment-4928711-20130326191226/@comment-4829046-20130327015608

Actually Haytham and co. were "good" in the beginning of AC3(cept Tom, he was just funny), but according to Ziio Haytham became obsessed and later stopped caring about refraining from killing.