Bombing the holy shrines was most probably work of some Zarqawi terrorists /not insurgents and normal people that just don't want occupation/
"I stress that the bombing of the shrine was not an act of the Sunnis of Iraq, but the Zarqawists and the Saddamists," said Hakim, leader of the Supreme Council for the Islamic Revolution in Iraq (SCIRI), the leading party in the Shia United Iraqi Alliance.
But there is also other point of wiev. Here are quotes.
"We cannot imagine that the Iraqi Sunnis did this," said the influential Sunni cleric Sheikh Youssef al-Qaradawi, an Egyptian who lives in Qatar.
"No one benefits from such acts other than the U.S. occupation and the lurking Zionist enemy."
"If responsibility is not in the hands of the Iraqi government, then I consider the responsibility for this event lies with the occupation forces which should either leave immediately or according to a timetable," Al Sadr said in Damascus on his way back to Iraq.
"They /United States and Israel/ invade the shrine and bomb it because they oppose God and justice," Ahmadinejad said, referring to the U.S. forces in Iraq.
“These passive activities are the acts of a group of defeated Zionists and occupiers who intended to hit our emotions,” the Iran's leader said in a speech that was broadcast on state television.
Also I found interesting article about bomb attack on Shia Shrine.
Day after day, the situation in Iraq became worse and worse. The BBC had reported today that about 100 people have been killed in the aftermath of bombing the Shia Shirne yesterday. This is insane.
Only evil souls think about this kind of bombing to make riot between the two major secarians of Iraq. I'm sure that any moderate sunni will never think to bomb such a place for the shias. Therefore, It's very important that the iraqi people unite their power to overcome this crisis, and don't let the situation to reach a civil war.
It's the responsibility now for the leaders and Muslim scholars - both Shiites and Sunnis - to make their effort to stop riot, because none of the Iraqi people will gain from such situation; rather they will be loosers if this fury didn't stop. That's about the people.
As for the shrine, Look at the picture - to the left - and see how the shrine became after bombing! This shrine returns back to the 9-10th century and was rebuild 3 times later in the 11th, 12th and the 19th centuries respectivly. The golden Dome was one of it's charcteristic, which gave it more beauty. It's listed under Iraqi World Heritage list.
I hope that this beautiful shrine will be restored as soon as possible. I also hope that the AKDN raise a fund for this restoration in the near future if they can. This is a wish from a simple Muslim Sunni Man to his his highness, the Aga Khan, to raise such fund if he can in the near future to restore this building.Full Article