If you consider 20% all, then I guess your right......2-
FBI 2016 Murder Rate
10
Wilmington, DE
9
Trenton, NJ
8
Riviera Beach, FL
7
New Orleans, LA
6
Camden, NJ
5
Detroit, MI
4
Gary, IN
3
St. Louis, MO
2
Chester, PA
1
East St. Louis, IL
4 Cities in the South if you include the St Louies......
but how Red?
East St Louis has a higher murder rate and violent crime rate in 2016 than 2015, which was also the year a Democratic mayor was elected.....
St Louis
Hasn't had a Republican mayor since Aloys Kaufmann in 1949. Fringe of the Deep South, but usually considered part of the "South".
New Orleans
Normally this would be easy, except they have Never had a Republican mayor, ever. Yes, LA is probably red but not 'Nawlins apparently.
Riviera Beach, FL.
Another likely give me [2-10 according to your thesis......] but in Miami. I guess they still hate Kennedy in Palm Beach and southwards....
What about the rest?
Chester Pa.
Suburb of Philly, which hasn't had a Republican mayor [Bernard Samuel] since the start of 1952. Also within spitting distance from Joe Biden's stomping grounds [Delaware]
Gary Indiana.
Just across the Indiana Illinois border from the 2nd largest city in the US [Hint:, probably Blue]
Detroit
Not in the south not Red
Camden NJ
Not in the South, Not Red
Trenton NJ
Not in the south and not red
Wilmington DE
Not in the South and Not Red, but the Home of Joe Biden, this one dude.
........................................................
How about looked at from a different angle.....
MURDER INCREASE FROM 2015
CITY SEPT. UPDATE 2016 FINAL DIFFERENCE
Oakland, Calif.
Cleveland
San Antonio
Chicago
Memphis, Tenn.
San Francisco
https://fivethirtyeight.com/features/u-s-cities-experienced-another-big-rise-in-murder-in-2016/