According to Raymond Ibrahim, calls are starting among a more radical fringe of Islamists to destroy the Pyramids:
According to several reports in the Arabic media, prominent Muslim clerics have begun to call for the demolition of Egypt’s Great Pyramids—or, in the words of Saudi Sheikh Ali bin Said al-Rabi’i, those “symbols of paganism,” which Egypt’s Salafi party has long planned to cover with wax. Most recently, Bahrain’s “Sheikh of Sunni Sheikhs” and President of National Unity, Abd al-Latif al-Mahmoud, called on Egypt’s new president, Muhammad Morsi, to “destroy the Pyramids and accomplish what [Muslim conqueror of Egypt] Amr bin al-As could not.”
The calls to destroy the Pyramids are certainly fringe, and do not represent the vast majority of the Egyptian public or the Egyptian leadership, even amongst the Muslim Brotherhood. Still, that such a fringe and wacky idea gains any voice in Arabic media or on Islamist websites should be cause for concern, given precedent.