When the new Colorado Visual Arts Standards came out a few years ago, I noticed something entirely new. One of the standards was created for teachers to inform students about sacred objects, symbols, and rituals. Specifically, an artist has a duty to avoid using imagery that other cultures hold sacred. "Analyze the reasons to avoid replication, interpretation, or illustration of images and/or icons that are culturally sensitive (e.g., kachina, dolls, Navajo sand paintings...)" I have always been interested in other cultures, and it was very enlightening to learn about the importance of these sacred objects.
If you are interested in learning more, please read this article by NPR:
What part of sacred don't you understand?