If there was a movement in the United States led by a man in, for instance, North Korea or China or Russia, which the US had classified as a terrorist organization, and the members of this movement held positions in academia, in the police, in the military, in the judiciary, and in the media; and they believed that their leader was infallible and possessed attributes of Divinity; and members of the movement within the US military turned their weapons against the government and the people, fired missiles at Congress and attempted to overthrow the government….ponder the American response.
Indeed, in America, members of such a movement would never have been allowed to attain such positions from the beginning, but would have been arrested the moment they were identified as members of that movement.
If you think that the mass suspensions of Gulenists in Turkey is an extreme measure, consider the fact that Turkey tolerated them until now to a far greater degree than any Western country would have tolerated a similar movement.