The Wharf residential and business project I visited recently is probably one of the biggestThe U Street/Shaw and 14th Street area has fa乐竟体育滚球st been turned into an upscale neighborhood in recent years, with many new restaurants and shops opening and new apartment constructionThe area, a 90 percent black neighborhood just a few decades ago, was only 30 percent African American by 2010To Hyra, it has caused not just residential displacement for African Americans but also political and cultural displacementHe saw major issues of乐竟体育滚球 gentrification and segregation in Washington beneath the surface of rapid urban renewalThese changes may look pleasant, but not quite so to Derek Hyra, an associate professor at the American University School of Public Affairs and an expert on neighborhood change