Then Hassan Abbasi, an Iranian political strategist, took the stage. In Iran he is known as a provocative thinker, but outside the country he is mostly famous for his theory that the American cartoon figures Tom and Jerry are part of a Zionist conspiracy.

Mr. Abbasi said popular TV series like “The Simpsons,” “Lost” and “South Park” were part of a ploy to present famous Hollywood directors as new philosophers, pushing “a mix of ideologies,” which all accumulated in “Hollywoodism,” he said.

“They entertain us, but indoctrinate us at the same time,” said Mr. Abbasi, who drew applause from Iran’s minister of culture and Islamic guidance, Mohammad Hosseini. “Hollywoodism” revolved around sexual thoughts, he added.

On a screen, Mr. Abbasi showed an image of a book about sexual fantasies called “Who’s Been Sleeping in Your Head,“ by an American writer, Brett Kahr, and said that American movies caused sexual problems. “The images you see pollute your sexual fantasies,” he told the audience.

Then a group of teenage schoolgirls in black chadors took the stage to sing a song in English about their love of God. But their voices were drowned out by a male voice on a recording, because according to Shiite Islamic tenets, women’s singing voices are arousing.

“We want to show the world that Iran is open to debates, we want to break the Western cultural embargo against us,” said Mr. Talebzadeh, who was one of the organizers of the conference. He said he wished that Ben Affleck, the director of “Argo,” would come to Iran to see the country for himself. “Be sure he would change his mind — we are not what Hollywood says we are,” Mr. Talebzadeh said. “He is welcome.”

After lunch, the delegates again convened for a round-table debate on “Argo,” which Mr. Talebzadeh said was “anti-Iranian”; “Zero Dark Thirty,” which he called “outclassing Leni Riefenstahl’s Nazi propaganda”; and “Unthinkable,” a 2010 film in which Samuel L. Jackson’s character tortures an Iranian agent who is trying to set off nuclear weapons in three American cities.