DU-posts about cutting off non-Prog family or plans to spoil non-Progs' family celebrations have become DU-liturgy around Thanksgiving, Christmas, and maybe Easter and Mother's Day.
Then around Memorial Day, July 4th, early August (Hiroshima & Nagasaki), Columbus Day, and Veterans Day DU-liturgy is about how racist, sexist, and everything-evil-ist America is.
DU-Prog'ism is a religion of what they hatred and expressing their hatred.