The U Street/Shaw and 14th Street area has fast 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 2010letou国际米兰网站To Hyra, it has caused not just residential displacement for African Americans but also political and cultural displacementHe saw major issues of 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 letou国际米兰网站at the American University School of Public Affairs and an expert on neighborhood changeThe 14th Street near U Street, a traditional African American neighborhood, is now lined up with hip restaurants and bars in this photo taken on Sunday