The Bibas Family: Why?

At times like this, when we are all walking around with hearts that are shattered into smithereens, we face a major challenge to our emuna. The evil inclination yells in our ears, "How can Hashem allow something so cruel, so barbaric and so sadistic as the murder of Shiri Bibas and her two angelic red-headed sons, 4-year-old Ariel and 3-year-old Kfir? Why do such unspeakable atrocities happen to such pure, good and innocent people? Let's get some answers and try to make sense of the insanity that's going on all around us.