To me, I feel like it makes interesting news because of the irony.
First of all, this was the first of the consecutive media coverage of the next unarmed teens that will be killed. Also, this was one of the first of events that sparked nationwide concern for the gun debate, although of course its always been an issue, I just mean on terms of media overcoverage.
Anyways, you would think that someone who barely slipped from a life sentence and got away with murder would have tried to shine a positive light on the right to bear arms, but instead he is making a bad name for it.
Also I think its odd that Micheal Brown is portrayed as a terrible person for robbing a store unarmed which cost him his life, but people want to sympathize with poor Zimmerman for the media putting him on blast for pulling out a gun (armed) on his wife and throwing wine bottles at her.