No charges pressed because jury will nullify; it's a cycle.
Jury nullification, of a sort, actually dates back to England. One of the pressures that diminished the penalties for theft (which had crept up to "death") was that juries, seeing a young man in the box with their whole life ahead of them whose only crime was taking from some unaccountable rich boffin, found themselves unwilling to toss the man in the gallows for taking from one who had plenty.
Upon seeing this pattern emerge, the London merchant class panicked and petitioned the king to lower the penalty, lest no crimes against them be punished at all.
Jury nullification, of a sort, actually dates back to England. One of the pressures that diminished the penalties for theft (which had crept up to "death") was that juries, seeing a young man in the box with their whole life ahead of them whose only crime was taking from some unaccountable rich boffin, found themselves unwilling to toss the man in the gallows for taking from one who had plenty.
Upon seeing this pattern emerge, the London merchant class panicked and petitioned the king to lower the penalty, lest no crimes against them be punished at all.