The anniversary of Israel's darkest day is marked by the sounds of war and the pain of loss. Thousands gather at the site of the Nova music festival, where 364 people were murdered and 40 were taken hostage. The president of Israel consoles the relatives of the dead and speaks of the barbarism of that day. The war that followed has destroyed Hamas's ability to attack Israel, but also caused destruction in Gaza. Israel is united in grief but divided over the course of the war.