A killing of a black child (or any black person, for that matter) becomes a National News story. A killing of a white person (even a child) is only mentioned by FOX News, and mostly on its commentary. Just exactly why is this? That IS a fair question.
The answer is that the MSM (and, to be fair, FOX News, Talk Radio, and other outlets) aren't about facts; they're about creating and driving narratives, both for their ideological agendas and for ratings. The MSM is vested in the narrative that we are a nation where black folks live in danger of being massacred by police for no reason, and by stealth racist whites who are secret Klansmen. That blacks in America commit violent crimes at a rate higher than any other demographic (a rate that goes up significantly when applied to young black males) is undisputed, yet the MSM never mentions it and attempts to drown out anyone who states this, but it is true. It is an uncomfortable fact, and a fact that should be uncomfortable, but it is a fact. And it's a narrative-destroying fact; indeed, in the wrong hands, it produces a counter-narrative that blows to bits the BLM/Antifa narratives of today.
This problem doesn't get solved because it seems that people are not allowed to speak of this fact as a fact. Perhaps if we actually did so, not through narrative-driven political journalism, but through sober and rational policy discussion where each side actually listens to the other, some kind of real solutions can be brought about. I don't wish this problem to be hashed out on partisan news outlets, but I do think that if the bias in academia could be ratcheted down, that would be a place to start.
It is not the act itself of a white person killing a black person which provokes such outrage. It is the authorities’ reaction.
Compare this to the Ahmaud Arbery case. The crimes are fairly similar - an innocent person killed in a shockingly violent and unprovoked manner.
In this case the suspect, who seems to a mentally ill individual, was swiftly detained and charged. In the Ahmaud Arbery case, the two suspects, who were “respectable” members of the community with links to local law enforcement, were only charged after weeks due to national outrage.