I've been following this since it happened. I visit weird sites and I do believe there is a bias not to cover black on white crimes. This one is horrendous and it should have gotten a ton of more coverage.
Look up the rape statistics of black on white and white on black rape. You would be shocked at the differences. The media doesn't want to cover it though. There is a double standard.
Also, many journalists have officially decided not to report the race of criminals in the press. Why? Because it is not relevant (that is what they say). (I tried to find the link, it is on another computer.)