All valid targets of criticism, but I consider our National Media as the real culprit and co-conspirators in these crimes.
They never/rarely bring up these black youth on white attacks, but instead they swamp the airwaves with breathless accounts about the rare white (or 'white hispanic') attacks on blacks (whether they were actual attacks, or were acts of self-defense, or accidental - the Media broadbrushes it as a generic 'attack') -- you are going to poison minds.
Yes, growing up in broken homes, and living a life that drums it into your head from infancy that you are an unjust victim of society, and having 'churches' that exult skin color over Christ (I had my eyes opened when I read the 'about us' page on Obama's Chicago church in 2007), you are going to be fairly poisoned when you grow up -- but, on top of that, when you have it blared in your ears that white folks are constantly attacking other blacks without reason, these black on white attacks will continue. If the National Media did their job and highlighted the black on white crimes ('knockout game', murders, feral packs, etc...) you'd at least have a chance of embarrassment setting in, and people 'might' (maybe they are too gone at this stage, I don't know) change their behaviour. But no, our Media just encourages this descent into depravity and violence.
Valid points, all.