Many of us know the names: Sandra Bland, Daunte Wright, Philando Castile, Walter Scott, Sam DuBose. They are just a few of the hundreds of Americans across the country who have been killed by police during a traffic stop. In many of these cases, police had stopped the victim using a practice called “pretext stops” — pulling someone over for a minor traffic or equipment violation and then using that stop to conduct an unrelated speculative criminal investigation, not for the purpose of enforcing the traffic code.