At the core of young black men's violence against mostly white victims: the constant presence of police.

Forty years after Richard M. Nixon launched the campaign against drugs, even blue-ribbon commissions are conceding that the mass arrests and the gun battles have not worked.

Raising moral issues about mass incarceration will not work. Let's argue that halting it will, at last, end their white guilt about the "black problem."

The former talk-show host uses the drug for chronic pain.