Marianne Williamson walked to the middle of the stage, paused for a second, then she asked all the black people to stand. The New York Times best-selling author, internationally known spiritual teacher and native Houstonian was in town recently for her "Love America Tour" at Unity of Houston. She urged the 200 of us from our seats. She then instructed a white person to hold the hand of a black person standing. A white woman and a teenage girl who looked to be mother and daughter in the row behind me took my hand and arm. Williamson then told the...