Understanding the Motivations Behind Sullivan's Killing of Trooper Barrigan in 'The Departed'

In the critically acclaimed film 'The Departed', released in 2006, the character of Colin Sullivan (played by Leonardo DiCaprio) faces a pivotal moment during his journey as an undercover cop posing as a gangster. The reason for his action - the killing of Trooper Barrigan (played by Pete Postlethwaite) - is not merely a random act of violence but a complex decision rooted in Sullivan's need to maintain his security, control, and peace of mind. This essay explores the motivations behind the killing of Trooper Barrigan and highlights the intricate web of alliances, betrayals, and trust built throughout the film.

The Context of the Killing

The killing of Trooper Barrigan, while seemingly a significant moment, is part of the larger narrative that underscores the themes of deception, loyalty, and the blurred lines of right and wrong. Barrigan, who is a unwitting mole for Jack Nicholson's mob boss, is technically on Sullivan's side from an initial perspective. However, Sullivan is fully aware of the precarious nature of this arrangement. As an undercover officer embedded within the system, Sullivan is acutely aware of the potential dangers posed by individuals who know his secret. Knowing that Barrigan is working secretly for the mob, Sullivan recognizes this as a threat to his own position and the safety of his mission. It is this recognition that compels him to eliminate any potential traitors who could jeopardize his position of trust within the criminal underworld.

The Psychological Complexity of Sullivan's Motivation

Sullivan's character is a master of deception masquerading as a gangster. His ultimate goal is to unravel the 'Departed' - the traitors within his own department. Sullivan's investigative nature and constant vigilance lead him to take decisive action when faced with any sign of betrayal. Trooper Barrigan's mere existence as a potential mole represents a significant risk to Sullivan. This risk is magnified by the inherent danger and instability that comes with uncovering such secrets, as seen in the film's intense and suspenseful atmosphere.

From a psychological standpoint, Sullivan is under immense pressure. He is constantly on guard, unable to relax and thoroughly grounded in the knowledge that someone might be watching him. The act of eliminating Barrigan, for Sullivan, is not so much about vengeance or personal resolve as it is a calculated step to secure his position and safeguard his future. This decision is further highlighted by the intimate scene that precedes the killing, where Sullivan is alone, reflecting on the true nature of the deception and betrayal:

"Sometimes I wonder if I’ve ever really trusted anyone, even myself."

The Role of Fear in Sullivan's Decision

The fear and uncertainty that Sullivan experiences contribute significantly to his decision-making process. Throughout the film, Sullivan grapples with the constant threat of being discovered and exposed. The eliminating of Barrigan serves as a preemptive strike against potential exposure, ensuring that the information he possesses does not fall into the wrong hands. This act is fundamentally about survival and maintaining the integrity of his mission.

The Impact of Sullivan's Decision on the Narrative

The killing of Trooper Barrigan has far-reaching consequences that echo throughout the remainder of the film. It solidifies Sullivan's position within the criminal underworld while also setting a dangerous precedent for how others in the department might act under similar circumstances. This event underscores the film's exploration of morality in a world of deception and reinforces the themes of paranoia, betrayal, and the thin line between right and wrong.

Ultimately, Sullivan's decision reflects the complex nature of loyalty and integrity in a world where trust is an illusion. The killing marks a turning point in his journey, highlighting the lengths one might go to protect their secrets and maintain their power. In the broader context of 'The Departed', Sullivan's actions set the stage for the film's climactic confrontation and provide a deeper understanding of the psychological and ethical dilemmas faced by those caught in the web of deception.

Conclusion

The killing of Trooper Barrigan in 'The Departed' is a pivotal moment that reveals Sullivan's motivations and the complex web of alliances, betrayals, and trust that define his character. By understanding the psychological and practical elements behind this act, viewers gain a deeper appreciation for the film's themes and the profound complexity of Sullivan's journey.