Because he wants to incite more problems. The DOJ has already been caught organizing protests...as if that is somehow their job. Removing the stand your ground rules places the burden on the person who is the Victim. By all accounts this case had nothing to do with stand your ground. But if someone corners you and assaults you, you better hope if you win the fight that there is no way on earth they can demonstrate that somehow there was a path for you to flee. Because if they can...you're finished. The system is so screwed up that my uncle was once hit with a lawsuit for shooting an intruder who climbed into his dining room window in the middle of the night. He claimed he was on the way out of the house when my uncle shot him. In the end the guy lost. But not until years of aggravation for my uncle.
What I have learned from all of this is and prior incidents over the years... is that clowns like Holder have been around for years. They are always looking to defend the attacker if there is a racial case to be made and it fits their agenda. Back in 2009 the President jumped the gun and assailed a police officer in Cambridge for simply doing his job because he questioned a black Professor who appeared to be breaking into a home. He never publicly apologized, but instead invited him to a "beer summit".
If God forbid I ever had to fire my weapon at an intruder or someone attacking me and killed them...I am not sure I would even report it if nobody was around. If I shot someone who was a minority, no matter what the situation was they'd look to hang me in the media. I'd be better off digging a whole in the backyard even if I am innocent. At least I'd have a chance of keeping my life, unlike Zimmerman who's life won't be left alone...even after an acquittal. That's why cops for years carried throw away weapons. It was there only defense against political and media driven baseless attacks. Once the incident happens the Holder's of the world want to make it political and assign an alternate motive. Now since this case was assigned a racial motive, they'll attack the stand your ground laws and make sure you're forced to evaluate all of your escape routes in a fraction of a second before defending yourself.