Jurors can bring their bias intro a courtroom, not unlike posters do here, -- albeit without taking an oath.
Jury trials are not a perfect system, but the best thing going. A jury also has the better vantage point in weighing the evidence vs what we gather via media accounts.
The accused remains presumed innocent, but he was not acquitted. He can be retried, or he may cut a deal if it was 11-1 jury split.
My guess there will be a plea.