If you look at history, that's really not how elites react to violence (or its threat) from the 99%. Regicide is a Crime against God - meaning the social order which puts the elites on top. Vs. peasants are expendable at scale if the elites feel that they need to violently defend their elite status.
And this ain't chess, where Pawn x King is just another move. Nor 1960's America, where Mr. Oswald could buy a rifle and 4X scope by mail order, then get a job in a convenient book depository. If an assassin manages to kill a king, then 100:1 that it's an inside job - the perp is either another one of the elite, or acting his behalf.