Today is "Reformation Day" in churches that have their roots in the Protestant Reformation. The actual day is next Saturday, October 31, the anniversary of Martin Luther's nailing his "Ninety-five Theses" to the door of the church in Wittenberg, but any churches that observe the anniversary will be doing it today.
Why should they?
The first answer would be Because America is/was a Protestant nation, and it was Protestantism that made America the most prosperous and admired nation in history. Having repudiated its duty to be a Christian (Protestant) nation, America is now bankrupt and despised.
There is a second reason we should observe (though not "celebrate") "Reformation Day." That's because the Protestant Reformation planted the seeds of secularism which are now choking America to death. That post has not yet been written. Please contribute your suggestions for that post in the comments below.