Any one who read Divergent by Veronica Roth would easily say that this is one of those pivotal scenes in the story. When Four (Theo James) is throwing knives at Tris (Shailene Woodley) I think it got the attention of both her and the readers. Check out the clip from the movie.
Clip: Divergent – If I Wanted to Hurt You, I Would Have
Divergent, starring Kate Winslet, Shailene Woodley, Ashley Judd, Ray Stevenson, Ansel Elgort, Theo James, Miles Teller, Jai Courtney, Zoe Kravitz, Maggie Q, Ben Lloyd-Hughes, Ben Lamb, Christian Madsen and Tony Goldwyn is slated to hit theaters on March 21, 2014.