“Mum and Dad are dead. Sorry. Call help,” Rotem messaged his family at 8.01 last Saturday morning. He lay under a quilt soaked in his mother’s blood as he typed. Shachar Matias had used her body as a shield, a last great act of love towards her 16-year-old son, when Hamas gunmen broke into their home in Holit kibbutz. Inside their safe room, with shooting just outside the door, she ordered her youngest child to get under a thick layer of fabric, then lay on top of him. So he heard, but didn’t see, the attack that followed, an explosion...