Plains Indians have a rich culture.  Probably the most notable feature - an aspect of the culture that most people have some awareness of - is the reference to the four directions.  The four directions are marked by specific colors, and each direction is associated with certain beliefs or understandings.

President Biden put out a statement on December 14.  It starts like this: “Ten years ago today at Sandy Hook Elementary School in Newtown, Connecticut, our nation watched as the unthinkable happened. Twenty young children with their whole lives ahead of them. Six educators who gave their lives protecting their students. And countless survivors who still carry the wounds of that day.”