If you rank US cities by both violent crime and by hostility to the urban fabric (e.g. development of highways through dense neighborhoods, removal of reliable

If you rank US cities by both violent crime and by hostility to the urban fabric (e.g. development of highways through dense neighborhoods, removal of reliable mass transit), a pattern emerges: the most dangerous cities in the US are also among the most car dependent. Detroit, Memphis, Birmingham, etc. This also closely tracks with residential air quality.