Answer:
For three centuries, the black community has been treated badly. This racism has killed the chances of black to succeed in competitive America. Till today, this discrimination has caused a lot of damages to the black, and hence, may be harmful. To set the record straight, the civil era has caused the black a whole lot of injuries, as they weren't given employment because of hatred, police brutality, racism etc. As a result of this, some black were able to withstand the pressure in the work force, same as they failed to withstand it as a group due to inequality of material, and general problems.