Not long after riots broke out in Ferguson late last summer, I asked my staff to tell me how many people shot by police were African-American in this country. I wanted to see trends. I wanted to see information. They couldn't give it to me, and it wasn't their fault. Demographic data regarding officer-involved shootings is not consistently reported to us through our Uniform Crime Reporting Program. Because reporting is voluntary, our data is incomplete and therefore, in the aggregate, unreliable.