The infamous murder of Kitty Genovese in 1964 was reported the medias as 38 witnesses in an apartment block saw or heard the murder but none did anything to save her, not even call the police. In 2007 someone digged into the story and discovered that this was wildly exaggerated. Only a few witnesses has seen the violence and they did in fact call the police - the police just didn't respond in a timely manner. https:/…
Even if it were true, there's a more charitable and in my opinion more plausible explanation: people are afraid to bother the emergency line with redundant calls. These days it's probably more plausible than ever, because we hear of prank calls to the emergency line and don't want to occupy the emergency line more than necessary.
0: https://thinkprogress.org/chronic-nuisance-laws-ordinances-e...