It appears Orwell is referring to the “pacifists” that think any violence ever, even in self defense, is bad. A radical pacifist, if you will.

I don’t know who this is but I’m here for the tea

I think using ignorance as a defense is beyond time to end. It’s so easy in this day to look things up. The American education system has intentionally made people less clever, but at some point it’s your fault for never looking into anything. This guy needs to be arrested for threatening violence on his children. It’s no different than if a parent said they wanted to put their child in a fight with a dog with the excuse of toughening them up.