The document discusses the construction of realism in a thriller film opening. It describes including a young white boy as the protagonist to subvert expectations and make the audience feel more vulnerable. Flashbacks of the boy stealing a box are used to imply guilt and unease. Shaky camera shots from the antagonist's perspective make the audience feel like they are chasing the boy. Minimal dialogue, ominous music, and the antagonist's dark clothing versus the boy's bright backpack enhance realism. The setting of an alleyway plays on crime associations to immediately create fear in the audience.