evidence: Detroit remains among nation's most violent big cities, FBI statistics show Detroit — With assaults, shootings and homicides on the rise across the country, Detroit continued last year to be among the most violent big cities in America, according to FBI statistics released Monday. [...] Alabama, Maryland and Pennsylvania reported limited data to the FBI in 2020, so cities with more than 100,000 residents that often appear high in crime rankings, such as Birmingham, Baltimore and Philadelphia, are not included in this year's data.