The authors of this brand new article use data from 21 different European countries to examine the impact of ethnic composition on perceptions of neighborhood safety. The basic take-away is that the more immigrants (or non-Europeans) there are in a community, the lower the perceptions of safety in those neighborhoods. But, while people believe they’re less safe, it’s interesting to keep in mind recent U.S. findings that higher immigrant proportions in neighborhoods actually appear to lower crime rates.