Once that happened to me, when I was little. My arms were chained, alongside an endless line of people, both ways. It sorta was black and white (mainly grey) that was tinted orange, if i remember correctly? There was about 3 or so people. I remember this one guy had a knife. He was dressed up like the killer from "Scream". He stabbed me and I remember it being so bad that in my dream it took the wind out of me. And I remember holding onto my wound and looking to my left as he continued to kill the others who were chained up.