[lisper]

> Helps imprison the right sort of person.

While I agree with the general sentiment, it is worth noting that the original law that created the sentencing disparities between crack and powder cocaine, the anti-druge abuse act of 1986, was supported by the congressional black caucus [1] because crack was such a serious problem in the black community at the time. So it was not a case of white people conspiring to put black people in prison, it was black people trying to impose prohibition on themselves, which of course backfired badly as prohibition always does.

[1] http://en.wikipedia.org/wiki/Race_and_the_War_on_Drugs