No, doofus. It's not "outmoded methods." It's not on US.
It's about the personal moral failure of millions of blacks -- about 85% illegitimacy rates and crime rates off the charts. It's about a culture that thinks studying and working hard is "acting white" and so is avoided.
Racists like yourself seem to think that blacks can't make their own moral decisions, so their problems are "on US." Nope! The black problem in places like Detroit is that black people have been abysmal moral failures.
Crackers are to blame tot he extent that they largely crafted the welfare system that encouraged the moral collapse of the black family and thus black culture. But in the end, the blacks in Detroit made their own mess.