Pacifism doesn’t mean you don’t get angry. It basically just means that you don’t think violence should be the first option.
Like, I’m a pacifist, but I wouldn’t think twice about using lethal force to defend my life or others if no other peaceful option existed. But I’ll always try non-violent approaches first.
Not to gatekeep pacifism, but I would really struggle to justify taking another human life, even when seeing red. It would probably take long enough to get over that hurdle for what I was trying to prevent to occur. I am a physically large man and could do a lot of damage, so when I’ve been hit in the past I’ve found other methods of de-escalating the situation. Not applicable in every situation. But it would be something I’d have to put a lot of thought into.