Still looking for post-racial America? Turn on the TV. There's been a surge of multiracial casting in sci-fi and horror shows such as "The Walking Dead" and "Sleepy Hollow" (pictured from left, Katia Winter, Tom Mison, Nicole Beharie and Orlando Jones). These shows depict people of color, and women, in nonstereotypical roles. Anyone -- not just white men -- can now be the hero.