You know how the nobleman secured their rights under the Magna Carta way back in 1215?
They dragged King John down to the banks of the Thames and put a sword to his neck to persuade him to sign it.
They got tired of his arbitrariness and finally put an end to it.
http://en.wikipedia.org/wiki/Magna_Carta
Again, the only thing that criminals, thugly kings, or Muzzies respect is the business end of a sword or gun.
So why did they keep the king instead of ousting him?