It is so easy to break things, knock things down, ruin things, and people, and lives. It is so easy to destroy so very many things. But God is not the Destroyer more than he is the Creator: if he were, there would be nothing. To destroy in the name of the Creator is blasphemy.
Those who have killed the helpless, the innocent, the loving, kind, or just plain human people, will have to see all the faces of those they have murdered, and all of their friends, family, and all of those they might have helped, and all of the things they might have done to change the world. They will have to explain why they acted the way they did: not to the murdered ones, but to the God within themselves.