Dream of died, hands, kids, screaming

I was living in a house with a family. They had 3 sons. One day these boys got a toy gun for a present. Obviously as kids do , they started playing with it. One of the brothers pulled the trigger and it turned out that it wasn't a toy gun , but a real loaded gun. He shot his brother who died on the scene. Instead of throwing or selling the gun , the parents just hid it on the top of the wardrobe so the 2 sons wouldn't be able to reach it. But some time later one of the sons saw the gun sticking up from the top of the wardrobe and managed to get it down. He must've thought again that it was a toy because he started to play with it again. He pointed the trigger at himself and pulled. He too has died instantly. The parents and I were devastated because there used to be 3 boys but now there was only one. I remember then seeing the dad sitting on the couch crying and spinning the gun in his hands. I started screaming and telling him to put the gun down so that nothing bad happens. But he was too devastated to hear me. He accidentally pulled the trigger and shot the last son. The dream ended with me screaming over his dead body