Residential segregation in the United States is persistent, and even though policymakers tout the benefits of integration, social and economic headwinds limit its progress. These challenges to integration are often a result of fear of interacting with different racial groups. Using a nearest neighbor research design, we show that receipt of a new Black next-door neighbor, relative to receipt of a new White next-door neighbor, leads to an increase in 911 calls auto-dialed by home alarm systems. This effect exists irrespective of the race of the current resident. We even find evidence that current Black residents are less likely to apply for Concealed Handgun Permits when a new White neighbor moves in next door. However, we find no change in either crime related calls or reported crimes after the arrival of new Black neighbors. Taken together, these results suggest the presence of perceived but no actual threat to personal safety from new Black neighbors. More broadly, polices that promote integration may benefit from initially investing in actions that increase social interactions between different racial groups to counteract perceived threats to personal safety driven by racial stereotypes.