"There are lairs, damn liars and statistics", a quote attributed to Mark Twain. The point being statistics can be manipulated - as was one of the points of the OP; but, even when stats are meticulously kept the interpretation of those facts is critical for understanding.
Cause and effect is in play, did the conclusion evaluate all factors which may have influenced an outcome? How did poverty, environment, diet, and other variables impact the conclusion? How about abuse, single parent homes, radio and television watching - hours and programming - factor into the conclusion?
There is more at play than the color of one's skin or the ethnicity of those who engage in violent criminal behavior. Simply selecting one factor - skin color - proves nothing.
Sure all the factors you mention contribute to criminal behavior more than race. The fact remains that Blacks are more likely to grow up in single parent families, are more apt to be poor, more apt to have one or both parents on drugs, more apt to have a parent or sibling in prison and more apt to not graduate high school.
Who's fault is that?
Who's? There's more than one "Who's to blame" for the variable you offer
A culture that shuns education as being "too white", that would rather get high than get a job, that thinks they are entitled to the fruits of the labor of others, is not about to get out of that trap.
This comment does not deserve a response.
If Jessie Jackson and Al Sharpton turned from fomenting racial division to admonishing their own race for their shortcomings, racism, income disparity and abnormally high black prison inmate ratios would be over in a generation.
Again, you offer a single solution to a series of complex problems.
In stead, the division is getting worse. A white man kills a black teenager and Sharpton and Jackson are on the case in hours and the MSM is calling for his head before all the facts are gathered. But, when a white man is beaten to the point of coma by a group of 20 blacks and one of his assailants is heard to say "That's some justice for Treyvon." as he walks away, the Mayor and police chief say that the beating is not racially motivated.