The doctrine of the lesser magistrate was first popularized in a simpler form by John Calvin, who wrote that private Christians must submit to the ruling authorities, but there may be "popular magistrates" who have "been appointed to curb the tyranny of kings".
[3] This work drew heavily on Luther, including his Beerwolf concept as one of multiple conditions an evil ruler would need to fulfill before opposition to his rule could be justified.
In other words, even though an evil ruler is acting as a private citizen, he still may not be resisted unless all of the other conditions are fulfilled.
[1] Variations on this doctrine of the lesser magistrate were commonly taught by orthodox Calvinists such as Theodore Beza.
[4] Gary M. Simpson suggests that after the St. Bartholomew's Day massacre in 1572 there was a "populist expansion" of the doctrine in which "the ruled would no longer be merely the subject of the ruler; they would become citizens.