The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
The specific policies and initiatives developed during the Nixon administration that adversely affected the civil rights of African Americans were the initiatives including in his "Black Capitalism."
According to some experts, that initiative was just a smart move by President Richard Nixon to stop the protests of African Americans and neutralize the many resistance actions by the black community in the south of the United States. Those experts affirm that the initiative just created a segregated black economy in the country, that became so behind the white enterprises economy of the time.