Barack Obama is running for president in anything but a post-race world, but his campaign does beg the question, "What does it mean to be multiracial in America?" MSNBC.com original series, "Gut Check: Multiracial In America" examines the growth in the number of Americans living in multiracial families and the first-hand experiences and issues they face. Multiracial Americans surge in number, voice Being brown in a city of black and white MSNBC readers share their stories and photos.