It seems to me this does raise an important issue when choosing a jury. Ask them "Do you intend to use this trial as a soap box to advance your personal agenda?"
If you ever get called to jury duty, just tell them you highly doubt the police and the district attorney would be risking their careers by indicting someone when they don't have good evidence that the person is actually guilty - and they'll excuse you from jury duty
I wouldn't be able to serve in jury duty because I actually believe the police and the district attorney would not be risking their careers by indicting someone when they don't have good evidence that the person is actually guilty.