I didn't read the first part, but itachi is not a pacifist. Never had been.

@Doodlewuzhere91 yes, instead! Someone has stopped a Civil War and surely a future war between the other villages is a Pacifist. Of course Itachi a worse pacifist than Kuma, but Itachi has always been a pacifist seen that he hated wars.

To be against conflict does not make one a pacifist. A soldier can hate war, and fight to end war, that does not make him a pacifist. Itachi is such a soldier. To be a pacifist means one must have an aversion to all forms of violence. Kuma exhibits this quality, Itachi most certainly does not.

Neither of them are, the pacifistas definitely arent

Pacifista were evidently meant to be, although something (we don't yet know what) changed their purpose.

I don’t think they were meant to be because they were designed for combat

Recent manga chapters suggest otherwise. I'll refrain from spoiling, though.

@Doodlewuzhere91 A Pacifist can also uses the violence to stop a big threat to Peace