A single death can be understood as a collective threat.
In the days after 9/11, it was common to hear people say that it was the first time Americans had really experienced terrorism on their own soil. Those sentiments were historically wrong, and willfully put aside acts that were organized on a large scale, had a political goal, and were committed with the specific intention of being nightmarishly memorable. The death cult that was lynching furnished this country with such spectacles for a half century. (The tallies vary, but, by some estimates, there were thirty-three hundred lynchings in the decades between the end of Reconstruction and the civil-rights era.) We know intuitively, not abstractly, about terrorisms theatrical intent. The sight of Michael Brown, sprawled on Canfield Drive for four hours in the August sun, dead at the hands of an officer who was unnamed for a week, recalled that memory. It had the effect of reminding that crowd of spontaneous mourners of their own refuted humanity. A single death can be understood as a collective threat. The media didnt whip up these concerns among the black population; history did that.
http://www.newyorker.com/news/news-desk/world-ferguson?utm_source=tny&utm_campaign=generalsocial&utm_medium=twitter&mbid=social_twittermichael