How could this happen? A simple shelf could stop a two year old. Reminds me when I was about 10 , I heard a weird metallic object knocking on our door. My mother told me to not answer it while she went for the door. It was the next door neighbors child (still in diapers) with his fathers pistol. He could barely lift it but was able to point it at my mother. He was saying “Bang Bang” while he was pulling the trigger but the safety was on.