Like any other person who succumbs to a negligent and delinquent spirit, blacks become inferior when they allow themselves to get sucked into and owned by today's detestable "black culture" of narcissism, victimhood, abandonment of personal responsibility, sloth, and greed. This "black culture" was created and has been inculcated by the Democrat Party for the calculated purpose of enslaving the black vote for their political party.
LBJ ~ "I'll have those n****rs voting Democratic for 200 years."

The essential American soul is hard, isolate, stoic, and a killer. It has never yet melted. ~ D.H. Lawrence