Houston coach Kelvin Sampson grew emotional Friday talking about his father, John W. “Ned’’ Sampson, the longtime coach of Pembroke High School in North Carolina who once went toe-to-toe with members of the Ku Klux Klan. The Sampson family are members of the Lumbee Tribe of North Carolina, which has been advocating for federal recognition as Native Americans for more than a century, and the tribe often ran into conflict with Klan members in the 1950s. On Jan. 13, 1958, the Klan arrived in Maxton, North Carolina, to rally against what they called “race mixing’’ after a Lumbee family moved into an all-white neighbourhood and a Lumbee woman began dating a white man. Ned Sampson was among a group that forced the Klan out of town in what is still…