"Stanford sociologist Mark Granovetter set out to explain a paradox:“situations where outcomes do not seem intuitively consistent with the underlying individual preferences.” What explains a person or a group of people doing things that seem at odds with who they are or what they think is right? Granovetter took riots as one of his main examples, because a riot is a case of destructive violence that involves a great number of otherwise quite normal people who would not usually be disposed to violence.
Most previous explanations had focussed on explaining how someone’s beliefs might be altered in the moment.... But Granovetter thought it was a mistake to focus on the decision-making processes of each rioter in isolation. In his view, a riot was not a collection of individuals, each of whom arrived independently at the decision to break windows. A riot was a social process, in which people did things in reaction to and in combination with those around them. Social processes are driven by our thresholds—which he defined as the number of people who need to be doing some activity before we agree to join them.
In the elegant theoretical model Granovetter proposed, riots were started by people with a threshold of zero—instigators willing to throw a rock through a window at the slightest provocation. Then comes the person who will throw a rock if someone else goes first. He has a threshold of one. Next in is the person with the threshold of two. His qualms are overcome when he sees the instigator and the instigator’s accomplice. Next to him is someone with a threshold of three, who would never break windows and loot stores unless there were three people right in front of him who were already doing that—and so on up to the hundredth person, a righteous upstanding citizen who nonetheless could set his beliefs aside and grab a camera from the broken window of the electronics store if everyone around him was grabbing cameras from the electronics store... You can’t just look at an individual’s norms and motives. You need to look at the group.
His argument has a second implication. We misleadingly use the word “copycat” to describe contagious behavior—implying that new participants in an epidemic act in a manner identical to the source of their infection. But rioters are not homogeneous. If a riot evolves as it spreads, starting with the hotheaded rock thrower and ending with the upstanding citizen, then rioters are a profoundly heterogeneous group.
Finally, Granovetter’s model suggests that riots are sometimes more than spontaneous outbursts. If they evolve, it means they have depth and length and a history. Granovetter thought that the threshold hypothesis could be used to describe everything from elections to strikes, and even matters as prosaic as how people decide it’s time to leave a party.... what if the way to explain the school-shooting epidemic is to go back and use the Granovetterian model—to think of it as a slow-motion, ever-evolving riot, in which each new participant’s action makes sense in reaction to and in combination with those who came before?"What Granovetter and Gladwell are talking about here strikes me as crucial in understanding trends or patterns that begin to emerge not just in those whose lives raise warning flags (they are on the radar because their lives have been sufficiently disturbing to warrant intervention), but those who by all appearances are "normal" to our best definition of the word.
Gladwell applies this very specifically to the rise in school shootings. I think we can rightly apply it further - which is what I attempt to do in The Fall Of Thresholds Fall And The Rise Of "Slow-Motion, Ever-Evolving Riots."
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