@ BillyBrizzi & RollinBones

It's quite the norm sadly. The focus on the 70s to 90s is due to all 3 major cities experiencing their worst peaks ( both Totals & Rates). Yet , I've been digging through newspaper archives and way back to the roaring 20s it wasn't much difference ( Just lessor totals). 1930 Chicago had 350 homicides while NYC was at 480. Both cities been having high end homicides due to the large populous & poverty, etc.

If you think you are too small to make a difference, you haven't spend the night with a mosquito.
- African Proverb