Movies about American slavery tend to upset a portion of the U.S. population that would rather forget that dark chapter of America's history.

If the fictional slave film "Django Unchained" was enough to offend people, then "12 Years A Slave," a new movie (trailer below) based on real-life events is bound to spark outrage, notes the Daily Mail.

"12 Years A Slave" was originally a book written by a Louisiana slave named Solomon Northup. When it was published in 1853, the book shocked the American public and the film may as well.

Northup was born a free man in Saratoga Springs, N.Y., but was later kidnapped as an adult and taken to New Orleans where he was sold for $1000 to a devout baptist, William Ford.

Ford later loaned him to a brutal slave owner, John Tibeats.

After escaping Tibeats, Northup was sold to another sadistic slave owner, Edwin Epps.

Northup would remain a slave for 12 years, until a white lawyer fought for his freedom.

Northup’s story, 160 years later, has been filmed by director Steve McQueen.

"12 Years A Slave" premiered at the Toronto Film Festival last week, where it won the people’s choice award.

Apparently, the film is so strong that some critics walked out, but others cried.

Some critics say that "12 Years A Slave" is "the" film about slavery, much as Schindler's List is seen as the definitive film about the Holocaust.

Source: Daily Mail