What is criminal about his actions?  At MOST, as the jury stated, the rear ending of the motorcycle was negligent.  This was a high speed chase for over 3 minutes.  The officer has no idea where he was coming from, going to, or possibly carrying.  Based upon the glancing blow of the kick, one that barely jarred this dude, the injuries most likely happened during the "negligent" part of this arrest.  A grand jury would never indict this as a criminal matter, and no jury would vote to convict.   The most abhorrent aspect to this entire matter, are the actions of the State's attorneys, not the officer.