he is just doing what he feels is necessary to change the system that has caused a lot of chaos, he is willing to take actions to better it- harsh violent actions per say. his ideology differs from the main character, i mean hes the anti hero for a reason, i dont expect him to just accept naruto and roll on with him. no he has his own ideology and he is going to see to it, people are overeacting and exegeratting with this whole "dissapointed in sasuke and hes evil stuff". calm down afterall its a story.