As seen on Yahoo, a newest FBI report highlighted as follows:

• Violent crime dropped 4% in 2011
• Nationally, the murder rate fell 1.9% from 2010,
• Robbery, forcible rape and assault fell 4% each.

The report lists cities in US with its stats on crimes:

1. Flint, Michigan (Violent crimes per 1,000: 23.4, 2011 murders: 52)
2. Detroit, Michigan (Violent crimes per 1,000: 21.4, 2011 murders: 344)
3. St. Louis, Missouri (Violent crimes per 1,000: 18.6, 2011 murders: 113)
4. Oakland, California (Violent crimes per 1,000: 16.8, 2011 murders: 104)
5. Memphis, Tennessee (Violent crimes per 1,000: 15.8, 2011 murders: 117)

And we know that US has cities with more "positive stats":

• Top 10 best cities in US
• Top 10 most well-read cities

Other positive stats cities throughout the world:

• Top 5 greenest cities in the world