because police officers killed unarmed black men.
It's a statement or opinion piece (of shit) with no stats or facts that can be attributed to Obama.
If anything, Obama's Presidency has put the limelight on the thug racists like you. You are all having a temper tantrum now for eight years - along with the GOP. Joe Wilson as your poster child. It's been an itch you've wanted scratched for some time now and now you're happier than a pig in shit.