Viṣṇujana: "...the lawbook for mankind, it is supported that a murderer should be condemned to death so that in his next life he will not have to suffer for the great sin he has committed. Therefore the king's punishment of hanging a murderer is actually beneficial. Similarly when Kṛṣṇa orders fighting, it must be concluded that violence is for the supreme justice, and as such, Arjuna should follow the instruction, knowing well that such violence committed in the act of fighting for justice is not at all violence. Because at any rate the man, or rather, the soul, cannot be killed. For the administration of justice, so-called violence is permitted. A surgical operation is not meant to kill the patient, but is for his cure. Therefore the fighting to be executed by Arjuna under the instruction of Kṛṣṇa is with full knowledge, and so there is no possibility of sinful reaction."
Prabhupāda: This is the distinction between violence and nonviolence. People are very much advocate of nonviolence, but they are committing, according to their estimation, they are committing every moment violence. But from higher standard there is practically no violence and the things which apparently appear to be violence, if it is properly executed... Just like under the order of high-court judge, one body is being executed. So that is not violence. A justice of higher order is not meant for committing violence. It is justice. Similarly, when, under the direction of the supreme justice, Kṛṣṇa, anything is done, apparently, although it appears violence, it is not violence. It is justice. This is to be understood. Go on.