What is the source of your information?
There was exactly one murder in Lewiston in all of 2024.
Using per capital statistics when comparing cities like NYC and Lewiston is problematic. NYC has a daily influx of commuters coming into the city from the surrounding communities in 3 different states. In addition, it has non-commuters coming into the city for a whole host of other reasons - business, conventions, hospitals, sports & entertainment, museums, schools & colleges, airports, driving through to somewhere else, etc. Finally, NYC is the #1 tourist destination in the USA, so there are a whole lot of other non-residents in the city. Lewiston has little to none of this daily influx of outsiders who expand the real population of the city.