Name a major city that isn't run by Democrats. Democrats run virtually every major city in the country and have for decades. Those "Democrat ran areas" account for over 80% of our GDP. If our economy was just Republican ran areas, we would have the economy of a third world country.
What changed is the president. We have an utterly incompetent, racist, walking personality disorder for a president and the country is paying for that right now.
Additionally, the most dangerous cities are not Chicago, NYC, Seattle, Portland, Whatever. Dangerousness to the individual is not figured by the raw number of crimes committed in a city. It is figured by the number/10.000 population. NYC may have a large number of crimes but they have a huge population and your chances of encountering crime is less than another city with fewer population but the same number of crimes. So which cities are the most dangerous?
Here are the 10 most dangerous metro areas in America for 2020. 6 Democratic and 4 Republican
Anchorage, Alaska. - Democratic
Albuquerque, New Mexico - Democratic
Memphis, Tennessee - Democratic
Wichita, Kansas - Democratic
Lubbock, Texas - Republican
Detroit-Dearborn-Livonia, Michigan - Democratic
Spokane-Spokane Valley, Washington - Republican
Shreveport-Bossier City, Louisiana - Democratic
Corpus Christi, Texas - Republican
Mobile, Alabama- Republican
What are the safest cities 6 Democratic 3 Republican and 1 non-denominational
Provo-Orem, Utah - Republican
Lancaster, Pennsylvania - Republican
Portland-South Portland, Maine - Democratic
Green Bay, Wisconsin - Democratic
Poughkeepsie-Newburgh-Middletown, New York - Republican
Naples-Marco Island, Florida - Non-Partisan
Bridgeport-Stamford-Norwalk, Connecticut - Democratic
Allentown-Bethlehem Pennsylvania - Democratic
Harrisburg-Carlisle, Pennsylvania - Democratic
Reading, Pennsylvania - Democratic
What you learn from these statistics is that most cities, safe or unsafe are probably run by Democrats. Conversely most state governments are Republican. Some pretty corrupt and some fairly honest.
All this condemnation of Democratic cities as hot beds of crime is just so much Republican spaghetti thrown up against the wall to see what sticks.