Teenth the first federal holiday since dr. martin luther king day. why? because the truth matters. the truth matters. with your help, we established the national monument in honor of mamie and emmett till because we heard mrs. till s call, the mother of a 14-year-old son who was lynched and whose body was mutilated. but the mother insisted on a open casket at his funeral because she said, let the world see what i saw. the truth matters. it always matters. we can t just choose to learn what we want to know and not what we should know. we should know the good, the bad, the truth of who we are. that s what great nations do. we re the greatest of all nations. we re not perfect.