That style of policing was popular before Gladwell. It was Giuliani who really doubled down on it in NYC as the exemplar. See https://en.wikipedia.org/wiki/Br

That style of policing was popular before Gladwell. It was Giuliani who really doubled down on it in NYC as the exemplar. See https://en.wikipedia.org/wiki/Broken_windows_theory https://en.wikipedia.org/wiki/Broken_windows_theory It is also known as stop and frisk. This type of policing has also been adopted to traffic stops as well and arguably has lead to warrior cop policing. Gladwell discusses the implications of this in Talking to Strangers. So if you want a perspective on guns, gun violence, policing from the 1970s until today, I recommend it.