Introduction This paper seeks to discuss and analyze the casual theory of juvenile delinquency by describing an instance of juvenile delinquency as highlighted in the mass media, by describing the casual theory of juvenile delinquency with the definition of the basic concepts, by applying the theory to the instance of juvenile delinquency, by describing how the theory explains the delinquents acts, and by discussing the appropriate institutional response. Analysis and Discussion Description of an instance of juvenile delinquency highlighted in the mass media An instance of delinquency as highlighted in mass media is the case of Columbine Shootings where the person involved is minor. On one fateful day in Columbine High School, in 1999, Erica Harris and Dylan Klebold, both made shooting at their schools. They entered their school in cars and parked at slots not assigned to them where each could view a main exit of the school. Prior to that, they had set a small fire bomb in a field half a mile away from the school, which was as a diversion for emergency personnel. They placed other bombs in the school premises including the cafeteria and the library as the two have intended to open fire on students fleeing the school through the main entrances once the cafeteria bombs detonated. When the cafeteria bombs failed, the two armed themselves with their weapons, and walked toward the cafeteria, and proceeded to the highest point on campus so they could view the cafeteria’s side entrance and the school’s main entrance to their left. From there, they pulled out their shotguns and began shooting at students (Scott and Castaldo, whom they know and who were sitting on a grassy knoll while eating lunch. Scott died instantly while Castaldo was critically wounded, being hit 4 and 8 times respective. 1 The two have killed other people in the school at a young age hence making them juvenile delinquents in a real sense. It must be pointed however that before the killing, in 1998, Eric Harris and Dylan Klebold were count with tools that had been stolen, from a van found near Littleton, Colorado. After the arrest and trial, where both pleaded guilty to the theft, the judge gave them a sentence under juvenile diversion. Having been required to attend various classes together, including a class on anger management, it is believed that this could have caused the two to plan a killing spree as described above. 2 Description of the casual theory of juvenile delinquency defines the basic concepts 1-2 pages. Apply the theory to the instance of juvenile delinquency The casual theory of juvenile delinquency connotes a flippant attitude on the part of killers who were minors at the time they had violent behavior. Such attitude may just be caused by a circumstance that has an association in the past upon which the minor is made to react that could amount to violent acts that are disruptive of society’s norms including things that may be considered crimes. This researcher believes that casual theory has close relation with the differential association theory, which is credited to twentieth-century criminologist Edwin H. Sutherland. One of the propositions under said theory po