Showing mercy

I think you've become the bigger person when you not only show mercy to those who never show you mercy but going one step further and being bored with the thought of petty revenge. You've got bigger fish to fry!

Why?

I think this is the question most people ask after they see senseless violence. Why did they do that? What provoked them? Are they mentally deranged? We desperately want to understand because if we can understand we can make sense of our world and we'll feel safer in it.