The way I understand it — and I could be very wrong — the American legal system has been set up in such a way so as to prevent anyone from being convicted should there be a reasonable doubt as to their guilt. In other words, neither hunches nor emotions count, and whether or not you’re inclined to believe that such and such a person is guilty really makes no difference. The jury’s job is to determine if the evidence is strong enough to convict, not strong enough to be persuasive, not strong enough to satisfy one’s own curiosity.
Regardless of your personal thoughts on Trayvon Martin and George Zimmerman, those six women in Florida decided that there was some level of reasonable doubt which precluded a conviction of murder or even manslaughter. The same thing happened with Casey Anthony a few years ago. You might not think that’s fair; but I dare say you’ll be loving it should you or someone you love be wrongfully accused.