Twelve (victims murdered)
Race of all victims:WHITE
Race of shooter: BLACK
Friends of Navy Yard gunman describe him as a 'hardcore drinker' who spent hours playing violent shooting video games
Aaron Alexis, 34, converted to Buddhism and liked to meditate but also had marathon sessions playing violent video games
Shooter was being treated for serious mental illness and had been 'hearing voices'
His friend and employer said he once appeared at work with a gun tucked into his waistband
Another friend said Alexis had complained of racial discrimination
Alexis was kicked out of the Navy in 2011 after arrest for firing a gun into neighbor's apartment in Fort Worth, Texas
By Louise Boyle and Daniel Bates http://www.dailymail.co.uk/news/article-2422616/Aaron-Alexis-identified-Wahington-Navy-Yard-shooter.html
It would be interesting to note if there was an intentional selection of victims by race.
This would have to be gleaned from witnesses present during the shooting.
Arthur Daniels does not look white to me.