ATLANTA - A white Arkansas team’s win in a national “stepping” contest has sparked a fierce controversy over whether the integration of a once exclusively black college tradition constitutes a form of cultural theft. “What has happened is black youth culture, what people would call hip-hop, sort of made black culture . . . appealing to all kinds of people,” said Walter Kimbrough of historically black Philander Smith College in Little Rock, Ark., an expert on black Greek life. The uproar began when the University of Arkansas’ all-white Zeta Tau Alpha team beat out five teams in last weekend’s Sprite...