Few Americans change their choice of presidential candidate to a different political party from election to election. This study evaluates whether and in what direction the Black Lives Matter movement affected the small percentage of voters whose presidential votes changed from 2016 to 2020. Six waves of nationally representative probability surveys are used to establish that significant increases in the extent to which Americans perceived discrimination against Blacks and to which people favored more government efforts to address racial inequality both occurred in 2020. Using panel data, results suggest that increases in perceptions of racial inequality significantly increased the probability of vote switching toward the Democratic candidate. Attention to racial injustice also primed voters to rely more heavily on this issue when evaluating candidates.