The word for today is…
lèse-majesté (noun) – Lèse-majesté, a French term meaning “to do wrong to majesty”, is an offence against the dignity of a reigning sovereign or against a state.
Source : Wikipedia
Etymology :
Lèse-majesté (or lese majesty, as it is also styled in English publications) comes into English by way of Middle French, from the Latin laesa majestas, which literally means “injured majesty.” The English term can conceivably cover any offense against a sovereign power or its ruler, from treason to a simple breach of etiquette. Lèse-majesté has also acquired a more lighthearted or ironic meaning, referring to an insult or impudence to a particularly pompous or self-important person or organization. As such, it may be applied to a relatively inoffensive act that has been exaggeratedly treated as if it were a great affront.