Crowd Turbulence and "Crowd Quake" Leading to Crush Injuries at Overcrowded Events This video highlights the danger of overcrowding at a concert in 2005. With closely packed bodies, a slight movement in the crowd can cause a wave to ripple through the crowd that can easily lead to life threatening crush injuries and suffocation. #disaster #crowd #turbulence #quake #crush #injury #clinical #video #concert #trauma #trample