MappingPoliceViolence.org, a project of WeTheProtesters.org, is the most comprehensive analysis of police killings and their impact on black people in the US. We’ve mapped 302 black people killed by police in 2014, disaggregated the data by race/gender/age/place, established national trend data to monitor police violence over time, and identified the States and Police Departments most likely to threaten black life. We intend to update the tool and continue to refine it to support activist groups in their efforts to advance policy and systems changes that uphold the value of black life.