Exploring my mind

I was in a desert. Suddendly I heared some shots. A man was running riot, although I didn't see him killing people, people panicked and ran away. He was coming towards me - smiling oddly and having a gun in his hands. He said something about killing me and pointed with his gun at my head. All of the sudden somebody else drew a pistol and shot the man down to prevent him from killing me. I noticed the man being wounded and carried him away. I arrived at a place that remided me of a park or a zoo. I saw a girl(she was a classmate of mine) holding a huge piece of paper - although I couldn't read it(or I cannot remember) I knew what to do. I put the man down, the next moment she wasn't standing there anymore but I saw the family of the man who was wounded. We all sat down and discussed something, then I went home. At afternoon I decided to drive there again. I bought something at Mc'Donalds and looked at the place, but there was nobody.