"Sniper" also stirred controversy for its alleged glorification of war. Documentary filmmaker Michael Moore tweeted that 'snipers were cowards', while Michelle Obama and Sarah Palin supported the film.
As for historical accuracy, the film took liberties in some areas while the production team and cast took great pains to realistically portray the legendary sniper's life. Critics have pointed out that the memoir which the film is based on (American Sniper: The Autobiography of the Most Lethal Sniper in U.S. Military History), doesn't depict Kyle targeting an armed child, and also includes fictitious characters. In contrast, actor Bradley Cooper reveals that he spoke with Kyle before his death, studied footage of the marksman, gained 40 pounds, and went through vigorous sniper training with a Navy SEAL. At one point, Kyle's family and friends admitted doing double takes watching Cooper because of his close resemblance to Chris.