Rmmmm, of Master Benedict's "dictatorship of reletavism," the source have I located:
ANAKIN: The Jedi use their power for good.
PALPATINE: Good is a point of view, Anakin. And the Jedi point of view is not the only valid one. The Dark Lords of the Sith believe in security and justice also, yet they are considered by the Jedi to be. . .
ANAKIN: . . . evil.
PALPATINE: . . . from a Jedi's point of view. The Sith and the Jedi are similar in almost every way, including their quest for greater power. The difference between the two is the Sith are not afraid of the dark side of the Force. That is why they are more powerful.
ANAKIN: I should have known the Jedi were plotting to take over . . .
OBI-WAN: From the Sith!!! Anakin, Chancellor Palpatine is evil.
ANAKIN: From the Jedi point of view! From my point of view, the Jedi are evil.
Of course, that also raises the possibility that the "dictatorship of virtue" talk is an attempt at misdirection from a secret identity.