The growing diversity of the U.S. population — particularly in the Southwest—is reflected in magazine, online and television ads. But how do agencies determine how that diversity should be presented? How sensitive are they to what consumers are seeing?

To learn more, we spoke with Louie Moses, the founder and creative director of Phoenix-based Moses Inc. He was recently on a panel at South by Southwest titled "If You Are in Advertising, You May Be a Racist."