"They both got harrassed pretty evenly" - If you look at the national statistics, this is definitely not the case, so your anecdote unfortunately isn't representative.
"in investigatory stops, a black man age twenty-five or younger has a 28 percent chance of being stopped for an investigatory reason over the course of a year; a similar young white man has a 12.5 percent chance, and a similar young white woman has only a 7 percent chance. And this is after taking into account other possible influences on being stopped, like how you drive. " [in other words, this sample has been corrected for any difference in base-rate of justification for being stopped].
The interesting thing is, profiling like this can be a self-fulfilling prophecy; if the base-rate of drug possession is equal between blacks and whites, but blacks are stopped more often, then there will be a higher number of arrests of blacks per-capita, and it will look like blacks are more likely of committing a crime. This higher crime rate looks like a justification for profiling, when in fact it's just an artifact of the profiling that was done.
[Note I'm not making any claims about the actual base rate of drug possession, just illustrating an effect with an example]
E.g. see http://www.washingtonmonthly.com/magazine/january_february_2...
"in investigatory stops, a black man age twenty-five or younger has a 28 percent chance of being stopped for an investigatory reason over the course of a year; a similar young white man has a 12.5 percent chance, and a similar young white woman has only a 7 percent chance. And this is after taking into account other possible influences on being stopped, like how you drive. " [in other words, this sample has been corrected for any difference in base-rate of justification for being stopped].
The interesting thing is, profiling like this can be a self-fulfilling prophecy; if the base-rate of drug possession is equal between blacks and whites, but blacks are stopped more often, then there will be a higher number of arrests of blacks per-capita, and it will look like blacks are more likely of committing a crime. This higher crime rate looks like a justification for profiling, when in fact it's just an artifact of the profiling that was done.
[Note I'm not making any claims about the actual base rate of drug possession, just illustrating an effect with an example]