What decades of traffic stop data reveals about police bias

Philando CastileWalter Scott and Sandra Bland were all pulled over by police in routine traffic stops. All are dead.

In an effort to curb racial profiling, North Carolina became the first state to demand the collection and release of traffic stop data. University of North Carolina professor Frank Baumgartner took a look at that data and wrote a book on the subject titled, “Suspect Citizens.”

Baumgartner analyzed 22 million traffic stops over 20 years in the Tar Heel State and found that a driver’s race, gender, location and age all factor in to a police officer’s decision to pull over a vehicle.