In the middle of the Book of Mormon is described a war between the Nephites, the mostly god-fearing Christian people led by a popularly elected judge, and the Lamanites, who have a king and little in way of religion. Additionally, the Lamanites were spurred to war by dissenters from the Nephites, so they began to steal lands and cities from the Nephites. The Nephites were nearly destroyed from within by king-men - Nephite people who wished to return to a monarchic system of government and who refused to fight for their country, as well as supporting the Lamanites behind the Nephites' backs. When the Nephites were mostly righteoous, they won battles in this war. When they were not (when the kingmen took over in the capital) they lost ground, not only because of lack of supplies and forces.
Some of the letters between the leader of the Nephite armies named Moroni and the deposed elected judge named Pahoran show great bluntness, to say the least - especially in comparison to the policial jargon we're subjected to today. They join forces to battle the capital and kill all kingmen to refuse to fight for their country rather risk losing the war to the Lamanites. They did not take treason lightly in this country.
I give links to the chapters in question with a chapter summary from the LDS Scriptures. To see the strong language directed against a head of state (who is not offended) read Chapter 60 in entirety. Also worthy of note is that men's word was as good as his deed in this civilization. Were it so today.