It's a complicated and truly is the harshest form of punishment meant to deter criminal acts. Lynching is an equivalent quick judgement ruled by society. Even though in some cases the persecuted's innocence is valid, mob mentality results in their ultimate demise. Violence begets violence and one person's death won't truly resolve the deepest issue. What's crazy is the savagery that exists on this planet > https://www.livescience.com/60431-do-animals-murder-each-other.html