The argument on both sides has stayed narrowly within the bounds of Islam, with the opposition even deftly using green, the color of Islam and the family of the prophet, as a subtle symbol that its protests are rooted in the faith. Both sides say they are the true heirs of the revered revolutionary patriarch, Ayatollah Ruhollah Khomeini, in trying to carry out Islamic principles.
In his criticism on Sunday, Mr. Moussavi avoided any direct assault against the supreme leader, instead saying the government cheated on the results of the June 12 presidential election.
“Every Muslim understands that anyone who would lie in this way is not just,” said Mr. Kadivar, the Duke professor, who was a senior adviser to the previous reformist president, Mohammad Khatami. “The basic requirement for being the supreme leader is to be just. Justice is a key point in Islamic values.”
