9The definition of families is widening, whether it's because of mixed-race relationships, interracial adoption, or numerous other factors. Today, it is important to hear from a growing population about race, their shifting identities, and what family means to them.At the heart of the issue are the mixed-race families. Many mixed-race children have had difficulties fitting in, whether with one race or the other. In mixed-race relationships, one partner may face racism, while the other may not, or else they will experience racism in different ways. Children who have been adopted into families that identify as a race that is not theirs often find that they struggle to fit in with their families as well as with people who identify as their own race. Not only are these families navigating US American culture at large, but they also must navigate their own family structures and what it means to be mixed.Journalist Nicole Zelniker takes us on personal journeys to help us glimpse into overlooked worlds so we can more fully grasp what it means to be mixed. Zelniker spoke to dozens of mixed-race families and individuals, as well as experts in the field-such as psychologist Cirleen DeBlaere and historians Jos Moya and Karl Jacoby-about their own experiences, with the hope to fill a gap in the very important conversation about race in the US today.