Why does the Zebra killings of 1973-74 go un noticed?

It seems like everyone knows and talks about rodney king and any attack on black american. It's always rubbed in white peoples face like we are all so evil. What i want to know is why don't anyone know about murders of 16 innocent whites, some being women and children, by black muslims just for being white. The murderser were even appointed lawyers by the NAACP. The same thing happened in Miami in the early 90s by the Yahweh-ben-Yahweh group. All these groups are linked to the Nation of Islam. Google this stuff. Why dont this stuff make it through to everyone?