The main flaw in the tyrannicide argument these days, of course, is that the current brand of murder-by-government has nothing to do with tyrannicide.
Americans who are squeamish about political assassinations may be surprised to learn that one advocate of tyrannicide was Abraham Lincoln, himself the victim of an assassin's bullet.
Though a natural target for tyrannicide, Charles IX died of tuberculosis at the age of 23; but his brother Henry III, who was responsible for a couple of assassinations of his .