Frightening Numbers from the 1st Day's Reading in Criminal Law

Citing Jerome G. Miller's Hobbling a Generation, my Criminal Law textbook offers these disturbing statistics:

Recent studies in the District of Columbia suggests that at any one time, 42 percent of the city's black males aged 18 to 35 are subject to some form of criminal justice system control (incarceration, probation, parole, or bond for release pending disposition of criminal charges). For Baltimore the corresponding figure is 56 percent. For an inner city black male, the lifetime risk of arrest and incarceration may approach 90 percent.