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Strain theory is the main driving force behind research into serial killers and those who are mass murderers and/or school shooters. First, it is necessary to explain the concept of a mass murder. That gap of inability is considered strain and thus causes deviance in order to make up for what is lacking and achieve the desired goal.
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Basically, strain theory states that the driving force behind deviance relies on the gap between goals and the means of individuals to achieve them. General strain theory really started to become well known in 1992 with Robert Agnew. In our modern society, labels create a huge impact on the amount of acclaim or condemnation a person can get, even if their behavior is oddly similar. Three concepts contribute to our varying opinions of those “murderers”: general strain theory, labelling theory, and career deviants.
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A decorated military sniper, a serial killer, and an abortion doctor all have one thing in common: they are responsible for the death of multiple lives.