Israeli authorities have shown harrowing footage of killings and mutilations during Hamas’s rampage in southern Israel on 7 October. The government showed the 43-minute compilation in a private screening for dozens of foreign journalists at a military base in Tel Aviv on Monday to counter what it said were attempts to deny or downplay the extent of the atrocities. The footage, captured by security cameras, body cameras worn by Hamas militants, vehicle dashboard cameras, social media accounts and videos from mobile phones, left some reporters in tears. The material included the killing of children and decapitation of some victims. The...