Iran ? Nearly 90 professors at Tehran University have told Iran’s supreme leader that ongoing violence against protesters shows the weakness of the country’s leadership, a pro-reform Web site reported Monday, reflecting a growing willingness to risk careers and studies to challenge the ruling clerics.

The current rumblings from universities highlight the evolution of the opposition movement. What began as raw and angry voter backlash after last June’s disputed presidential election has moved to a possibly deeper and more ingrained fight against Iran’s Islamic leaders.