Screenshot from My FOX DCScreenshot from My FOX DCA Prince William County, Virginia, man says a police officer showed up at his door asking him to prove that his mixed-race children belonged to him. The officer said he been sent there by Walmart security. Joseph and his wife Keana, whose last names weren't revealed by local media, said they called Walmart and a security officer said a customer had reported a white man walking around with three young black girls.