They both are injuries? The same as punching someone in the face is injurious whether in self defense or as an attack. The correct thing to do when someone starts getting violent is to stop them from continuing. This sometimes requires violence, hence often injuries. Sometimes the violent person hasn’t yet actually punched anyone, but is doing things that strongly imply that they are planning on hurting someone. Such situations also call for stopping the violent person from continuing, even though no actual injury has happened yet.
They both are injuries? The same as punching someone in the face is injurious whether in self defense or as an attack. The correct thing to do when someone starts getting violent is to stop them from continuing. This sometimes requires violence, hence often injuries. Sometimes the violent person hasn’t yet actually punched anyone, but is doing things that strongly imply that they are planning on hurting someone. Such situations also call for stopping the violent person from continuing, even though no actual injury has happened yet.