Several grand juries have recently considered whether to charge white police officers with killing black men. We’ve already discussed the case in Ferguson, Missouri on this blog. Wednesday, a Staten Island, New York grand jury declined to indict officer Daniel Pantaleo in the death of Eric Garner. The New York Times has the story here. Then a South Carolina grand jury indicted officer Richard Combs for murder in the fatal shooting of Bernard Bailey, as Time reports here. Is it a small sample? A historic moment? A coincidence? An epidemic? Some or all of the above, depending on your point of view.