Part of Butler's Patternist series--Cf. Wikipedia.
"For four thousand years, an immortal has spread the seeds of an evolutionary master race, using the downtrodden of the underclass as his private breeding stock. But now a young ghetto telepath has found the way to awaken-- and rule-- her superhuman kind, igniting a psychic battle from L.A. mansions to South Central slums, as she challenges her creator for the right to free her people ... And enslave the Earth."--Publisher description.