WASHINGTON: Clint Eastwood’s hit film “American Sniper” has reignited a bitter debate about the US invasion of Iraq and one of its most famous warriors, with conservatives hailing the movie as a long overdue tribute to veterans.

Critics on the left have slammed the popular film as an attempt to whitewash the history of the American occupation of Iraq and say the subject of the movie, former Navy SEAL Chris Kyle, deserves no hero treatment for his handiwork as a deadly sniper.

Directed by Eastwood and starring Bradley Cooper, the film has broken box office records and is based on Kyle’s best-selling memoir, in which he expressed no regrets for the lives he extinguished as a sharpshooter in the war.

The right-leaning National Review called the film a “cultural moment.”

“The movie gives America something it’s lacked since the start of the war — a war hero on a truly national, cultural scale,” David French wrote.

The film has been nominated for six Oscars, including for best film and best actor. And both Eastwood and Cooper insist their movie is not meant to deliver any political message.

Cooper said that “for me, and for Clint, this movie was always a character study about what the plight is for a soldier.”

But a war of words has erupted over the movie and its protagonist, exposing polarized views of the country’s wars since 9/11.

Filmmaker Michael Moore created a firestorm when he appeared to dismiss the movie, tweeting snipers were “cowards.”

“My uncle killed by sniper in World War II. We were taught snipers were cowards. Will shoot u in the back. Snipers aren’t heroes,” he wrote.

Actor Seth Rogen, whose recent movie “The Interview” provoked fury from North Korea and a cybertattack on Sony Pictures, said “American Sniper” reminded him of the Nazi propaganda movie that appears at the end of Quentin Tarantino’s “Inglourious Basterds.”

Conservatives and a slew of celebrities quickly shot back at Moore and Rogen on social media, with former vice presidential nominee Sarah Palin castigating “Hollywood leftists.”

“God bless our troops, especially our snipers,” she wrote.

Moore and other critics of the film were not “fit to shine Chris Kyle’s combat boots.”

Newt Gingrich, the former Republican speaker of the House of Representatives, wrote that Moore should spend a few weeks with ISIS and Boko Haram.

Former soldiers have tended to give it high marks, and some veterans groups helped organize special early screenings of the movie for veterans.

But at least one US Marine who fought in Iraq ten years ago was not impressed.