These maps show nothing other than the correlation between democrats living in urban areas and republicans preferring more rural environments while also showing the link between population density and violence.

Of course murder rates are going to be higher in cities, there are more people. That's just an objective fact.

Another objective fact is that the political affiliation of people living in cities tends to be democratic whereas rural areas are more likely to be a majority republican. (I'm making sweeping generalizations as is your post).

I support change, but this argument needs data that shows more than the correlation between two variables that don't impact one another.