I should have worded it better - violence is the easy way. Easy is tempting. It’s harder to debate with people. Inherently better, no doubt! It’s a pattern in history that the number of people in power being corrupted by it is not low. Admittedly, not unfathomable high either, but it happens.

Last, sanity can slip in extreme situations and this, hopefully fictional, scenario is extreme in my book

You can’t both be sane and be ok with killing.