Your bro is an idiot. Death threats are illegal, and there is no way to prove him innocent.
You should make sure he looks tough when he goes to prison.
I don't exactly see how the had evidence against him in the first place.
Honestly, this world is getting worse by the minute.
I remember this guy tried to start an argument with me over myspace, and he threatend to kick my ass at school and all sorts of stuff. I told him he'd be better off if he just shot himself and stopped wasting his time.
School confronted me for bullying... Good job school.