Islamic religious authorities have begun tightening their grip on Iranian public schools, a report said Wednesday, as hard-liners expand an ideological "soft war" against Western influence.

The effort appears to be part of a wider drive to counter opposition groups and other pro-reform factions that have been emboldened by the unprecedented protests after June's disputed presidential election.

Opposition leader Mir Hossein Mousavi strongly attacked the Revolutionary Guard in a new statement Wednesday, accusing the elite corps of using brutal force to crush the massive street protests.

Authorities have recently emphasized the need to battle the reach of Western media, viewpoints and culture _ which resonate strongly in a country where nearly half the population was born after the 1979 Islamic Revolution.

Officials also have stepped up blocks on Internet links and closures of the few remaining liberal-leaning news outlets, while expanding state-run media arms and giving hard-liners more sway over education.

"Now, the enemy has put soft war on its agenda and the top priority today is to fight the soft war," Iran's Supreme Leader Ayatollah Ali Khamenei said on state television Wednesday during a meeting with Revolutionary Guard commanders and its affiliate paramilitary Basij forces.

Mousavi's statement said the Basij, the street wing of the Guard, was created by Ayatollah Ruhollah Khomeini, the father of Iran's 1979 Islamic Revolution, as a popular body to serve the public and not to become stooges of the government and kill citizens holding peaceful protests.

"Basij, which the Imam (Khomeini) favored, didn't stand against the people, it stood by the people," he said in the statement. "It was not expected that Basij ... rob the people of their free votes ... and be rewarded for detaining people at gatherings."

Mousavi says President Mahmoud Ahmadinejad stole the June 12 election from him through massive vote fraud. Hundreds of thousands of protesters poured into the streets in the weeks after the vote, prompting a violent government crackdown.

The opposition says at least 72 people died in the security crackdown on protesters and that many of those detained were abused in custody. The government puts the number of dead at half that figure.

Although the street protests died down months ago, Mousavi and other leading opposition figures have refused to silence their protests and their pressure on the country's Islamic leadership.

In his Wednesday statement, Mousavi said the Revolutionary Guard has under Khameini, Khomeini's successor, deviated from the values it was once committed to.