Black Lives Matter is a social movement, created and maintained on social media networks; its formation was spurred in part by the number of Black men and women who have been killed by police officers in the United States. This research focuses on the relationship between police-caused deaths of Black men and women and media coverage of and public interest in Black Lives Matter. The primary goal of the research was to determine whether traditional news coverage of Black Lives Matter was linked to the killings of Black citizens by police. We found that Black citizen deaths did not result in increased mentions of Black Lives Matter in either newspaper articles or Google searches. We did, however, find that when police officers were killed at a protest, mentions of Black Lives Matter in both the news and Google queries increased at a substantial rate, as did searches for “Blue Lives Matter.” The implications for police use of force, Black Lives Matter, and traditional news media are discussed.