Here beginneth the sermon.....
We all know people who are too busy or indispensable or important to sit on a Jury. They write to the court, and are usually excused, because a reluctant juror is a potential problem. So all of the busy educated successful people get themselves excused, and then on Sunday morning in the pub they moan about the poor quality of juries these days.
All that is required for evil to triumph is that good men should do nothing, as someone said.
Here endeth the lesson.
I am of course oversimplifying, but if the cap fits......