Here is a great video on the effects of the "Crack Baby" hysteria of the early 1980s. One thing I did not know was that pregnant women who used crack were actually being prosecuted in response to the madness.
It is hard to ignore the effects of racism here. There is a time-honored American tradition of turning minorities into the vessel for all the country's vices -- as if adultery, murder, idleness and all other manner of sin would disappear with us. This is especially true in the realm of drugs.