The first hundreds of what could be more than 12,000 federal crack offenders to win retroactive sentence reductions began walking out of federal prisons Tuesday, but there is much more work to do.

An investigation into a dope-slinging Brooklyn cop has opened a window on a wider culture of corruption in the NYPD, plus your typical handful of corrupt cop cases.

That federal offensive against medical marijuana distribution in California is rubbing a lot of people the wrong way, including a growing number of elected officials.

Fewer drug arrests mean more violent crime, right? Wrong, at least in San Francisco.

Can you guess the drug czar's official response to those White House marijuana legalization petitions? We thought you could. But did the White House guess that marijuana legalization would be their most popular petition topic?