While john is by his mothers bedside ,who interrupts his visit ? Why?What is Johns reaction?

While John is visiting Linda, the head nurse leads an entire Bokanovsky group (a large group of identical twins) into the room for their death conditioning. The boys act as if they are in a game room, and the head nurse encourages them to have fun. The idea is that if death and fun intermingle, then people will lose their natural fear of dying. When the boys notice Linda, they make fun of her ugliness and fatness. John angrily picks one of the boys up and tosses him away from her.