Shortly after the US invasion began, Sistani issued a fatwa advising Shia clergy to become engaged in politics in order to better guide the Iraqi people toward "clearer decisions," and to fight "media propaganda." As the summer of 2003 approached, Sistani and his followers began to petition the occupying forces for a constitutional convention. Later, Sistani called for a democratic vote of the people for the purpose of forming a transitional government. Observers described the move as being a path leading directly to Shia political dominance over Iraq's government, as Shia Muslims make up approximately 65% of the total Iraqi population. Subsequently, Sistani criticized plans for an Iraqi government for not being democratic enough.