This article is dated December 2018, and it's based on 2017 data, but whatever. 🙂 RoadSnacks has a similar list here, and here's USA Today's.
"This list was created based off information from the FBI's crime statistics which were gathered from US cities with a population over 100,000 between January 2017 and June 2017. The data looks specifically at the amount of violent crimes in a city which includes rape, robbery, and aggravated assault. It's important to note that the data used to create this Uniform Crime Report is collected voluntarily by police forces in cities across the country and not every city or state chooses to participate, so this list doesn't necessarily give the full picture. However, it does give a big picture look at some of the more dangerous cities which can be helpful for people who are planning their next big city vacation in 2019."