Found a few crime maps.

1. appears to be rather generic and lets you select any area. Not all police departments report in a way that allows It does not support my area, but it does support Detroit.

2. LAPD Crime Maps You guessed it, LAPD.

3. Michigan's Capital, Lansing can viewed through this link. There is a drop down where you select "Lansing Crime Map"

The number of crimes in a month on any of these maps is disturbing.