Actress Sienna Miller (R) and actor Bradley Cooper arrive for the premiere of the film "American Sniper"
IN PHOTO: Actress Sienna Miller (R) and actor Bradley Cooper arrive for the premiere of the film "American Sniper" in New York, December 15, 2014. Reuters/Carlo Allegri

"American Sniper," Clint Eastwood's war themed film, was the top-grossing movie in the U.S. and Canada, collecting $90.2 million in ticket sales over the weekend box office, according to multiple reports. The Bradley Cooper and Sienna Miler starrer film is based on the real life story of U.S. Navy SEAL Chris Kyle and has been nominated in six categories for Oscars. The film gave Hollywood its biggest opening for January.

"American Sniper" is based on a true story of a U.S. Navy SEAL named Chris Kyle, who was known as the most lethal sniper in the history of U.S. military. Kyle wrote his autobiography "American Sniper: The Autobiography of the Most Lethal Sniper in U.S. Military History" in 2012 and he died in February 2013.

The film has not only received great reviews on popular social media platforms like Twitter and Facebook over the weekend but scored a rare A-plus grade in the "exit polls" conducted by CinemaScore. The score predicts the box office success of a film. The film has also beaten the record of Hollywood's biggest hit "Avatar," which grossed $74.4 million in 2010.

"No one saw this coming. This really obliterated expectations," Paul Dergarabedian, a senior media analyst with Rentrak, is quoted as saying by Bloomberg. He is surprised that Eastwood, "an octogenarian," can still deliver such huge box office hits. The autobiographical film, which has earned a 73 perc ent positive rating on Rotten Tomates, is also projected to earn $57 million in weekend sales, according to researcher at Box Office.

However, not everybody is happy with the film's success and its story. Filmmaker Michael Moore called snipers "cowards," as they shoot from behind. He also shared on his Twitter feed that his uncle was killed by one.

My uncle killed by sniper in WW2. We were taught snipers were cowards. Will shoot u in the back. Snipers aren't heroes. And invaders r worse

— Michael Moore (@MMFlint) January 18, 2015

But if you're on the roof of your home defending it from invaders who've come 7K miles, you are not a sniper, u are brave, u are a neighbor. — Michael Moore (@MMFlint) January 19, 2015

The other films that raked in good money at the weekend box office are "The Wedding Ringer" and "Paddington." Comedy film "The Wedding Ringer" earned $21 million in weekend sales, according to Bloomberg, while the young bear story "Paddington" collected $19.3 million.

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