If there's a white-powdered lining to news that the mayor of the fourth-largest city in North America has a substance abuse problem, it's the opportunity to re-visit dangerous stereotypes about people who smoke crack. You've probably called them "crackheads" or "crack whores." You've probably used the word "crack baby." I probably have too without blinking. Why are we so comfortable using crack users as a verbal punching bag? The reason has roots in racism; Society didn't, and often still doesn't, respect the poor black people who are most associated with the drug.