him not guilty? reporter: well, that is exactly what people are upset about. the idea that that gun could only have one person s dna on it. there s video involved, as well. the officers heard saying i m going to kill that n word and then the shooting happened. so how do you have that happen and then you see maybe a gun coming out of that bag? that s what people think. the judge says that wasn t proven by the prosecution at all. if you look back in this direction, protesters have gathered. they ve been marching up and down the street. you can see the iconic arch in the distance there. and you can see young men carrying assault rifles through the street. that s not against the law because this is an open carry state, but people are walking around with guns. this has remained peaceful except for one skirmish between the police and protesters. police say they had rocks and water bottles thrown at them.