Most entrepreneurs of color can tell you a story about how they’ve been treated with suspicion in an office because of race. They can tell you that they’ve been doubted about whether they really belong there; how they’ve been assumed to be a security guard, delivery person, or administrative assistant, rather than the CEO. The consequences are significant. Research shows that the cumulative effect of such slights — contributing to individual self-doubt and demoralization — leads to turnover at three and a half times the rate of white men, and a huge loss to the economy.