Shereen and Gene look at "racial imposter syndrome." It's what one listener described as feeling fake, or inauthentic, in her identity. We invited listeners to write in, and hundreds of bi-racial and multi-cultural people shared their views. We'll also talk to social scientists about the basic need for belonging and the role language plays in identity. Later, writer Heidi Durrow joins us. She's founder of The Mixed-Remixed Festival, the largest annual gathering of its kind in the U.S.