So you're basically saying is that because they're poor, its okay to commit massive amounts of crime?
And there has been measures put in place to repair poverty among black americans. Affirmative action and by extension diversity quotas in corporations are explicity anti-white and are intended to give black people a chance to assimilate with the middle class. They also receive welfare that when measured(per capita) doubles that of white recipients. White taxpayers literally fund these programs that put them at a disadvantage.
And if black americans want to blame white people, then there is no excuse for why they don't take some of the white-taxpayer funded welfare check they receive and purchase a plan ticket to one of the many prosperous African countries. The fact is, a large majority of the black people in modern America have better lives than most in Africa. Africa is rampant with extreme poverty, government corruption, food shortage, genocide, lack of healthcare and therefore rampant disease, lack of quality consumer goods, and lack of liveable income.
The average income in Sub-Sahara africa is around $2,000, whilst the average income amongst black americans is closer to $30,000. Assuming the world works under a global free market(which it does in some sense), this puts black americans at a massive advantage financiall over sub-saharan africans.
Poverty isn't an excuse to crime. They have all of the opportunity in the world yet are still proportionally the most dangerous group of citizens in America.