HOUSTON (AP) — A Harvard University economist found that although police nationwide are more likely to use nonfatal force against blacks and Hispanics, that racial bias didn't translate to the use of deadly force by officers in Houston, one of the country's largest and most racially diverse cities. The police department gave him unprecedented access to incident reports and other data regarding officer-involved shootings and arrests for crimes such as aggravated assault in which officers could have used lethal force, but didn't. Fryer, who last year became the first African American to win a prestigious award given to the top U.S.