KANSAS CITY, Mo. — Growing up in a multicultural household, Christa Rice felt her thick, naturally curly hair was something undesirable, something to be hidden away. “As a kid I had the thickest hair in all my family,” says Rice, a Kansas City artist and social worker. “My family is Black, Mexican and Native American. We all look different. Me and my sister both had these curls that nobody else has, and my family used to tell us we needed to perm it because it was too thick. As a kid hearing that, you begin to feel it is ugly.” Rice is now working to try to make sure no other child feels that…