Dream of children, screaming

I was in a home with other teens and children. There were these 2 men and they took a boy out in the yard whom looked only 10 and threw him in looked what was like a dug grave there were a few. I knew they were going to kill us all. They beat him to death with a huge rock. I ran jumped the fence to a neighbor. Ran into there home crying screaming at them to call the cops. One of the men drove up out front but than they must've been arrested I was looking for my friend in real life after that in the dream and he was in jail as an accomplice. I didn't see him. I just was terrified and crying my whole dream