The physical evidence and witness testimony supports the cop's contention that he shot Brown in self defense.
"Seven or eight African American eyewitnesses have provided testimony consistent with Wilson’s account, but none have spoken publicly out of fear for their safety"
http://www.washingtonpost.com/politics/new-evidence-supports-officers-account-of-shooting-in-ferguson/2014/10/22/cf38c7b4-5964-11e4-bd61-346aee66ba29_story.html
"Seven or eight African American eyewitnesses have provided testimony consistent with Wilson’s account, but none have spoken publicly out of fear for their safety"
http://www.washingtonpost.com/politics/new-evidence-supports-officers-account-of-shooting-in-ferguson/2014/10/22/cf38c7b4-5964-11e4-bd61-346aee66ba29_story.html