Runaway jury

I enjoyed watching this movie. but in this movie, all things goes very fast. So, I couldn't understand this movie so much. But, seeing informations about this and watch this movie again by myself, I could understand a little. I thought that all juries are fair. But after watching this, I think that is not necessary true, for they are human before they are juries. Humans are affected by their own feelings and others. In this movie, some juries sometimes become emotional. So, juries may not judge fairly every time. In Japanese "Saiban-in" system, we can say the same thing. So, we must face this system understanding this thing.