Roger EbertAs 'Kick-Ass' opens in theaters, critic Roger Ebert warns movie fans in his one star review that the action flick is "morally reprehensible." Despite the film's R rating, the famed movie critic is fixated on the effect its 11-year-old main character Hit Girl will have on younger audiences.

In the film, Mindy (Chloe Grace Moretz) and her father (Nicolas Cage) try to become superheroes. During one scene, the young girl kills a gangster mob by shooting, stabbing and kicking them all to death. The knife-carrying child has quite a dirty mouth, too, uttering words even adults would be embarrassed to say. While the satire likely won't birth a new group of gun-slingers in America, Ebert stands by his review. "Say what you will about her character, but Chloe Grace Moretz has presence and appeal. Then the movie moved into dark, dark territory, and I grew sad," he wrote.

It's no secret Ebert has been an outspoken opponent of the Motion Picture Association of America's film rating system when it comes to which movies are "suitable for children." Ebert often attacks films featuring a diluted message that bad behavior can bring happiness -- especially when young characters are involved in the controversial, adult-themed plots.