Here's another article. So far, this sounds like a serious 42 USC § 1983 violation. Additionally, if the facts prove Mr. King's statements, then the officers involved should be criminally charged with felony assault.
I wish Mr. King a speedy recovery and hope justice is served.
Where is Al Sharpton on this one? Oh wait, it involves someone legally exercising their 2A rights.... nevermind. "Rev. Al Sharpton is calling for an end to gun possession in African-American communities." http://newsone.com/1616435/al-sharpton-gun-laws/