Those materials will be quite interesting.  With a 4-2 vote on the review board, I'm guessing there's some question regarding the actions of the officer.  Policies of transparency enhance accountability and accountability leads to more responsible action on the part of police officers.  

I'm not sure on this case....I think some witnesses did video the incident...However, I'm a strong advocate for "body-cams" for officers.  They provide that accountability and protection for citizens AND the police officers.    Gary