There are several reasons. One, "black folk" tend to have criminal records (at least one third of black men have been in prison (prison, not jail). Employers tend to not hire people with felony convictions on their records. Two, for many reasons, some valid, some not valid, black Americans tend to have lower educations than other ethnicities, even lower than Latinos. Any black person who has a decent education, no criminal record and even presents a minimally cooperative attitude can find a job. With a tiny bit of effort, they can find a postal office or governmental job that has great benefits, great pay and job security that people in the private sector only dream of.