#1 Caracas, Venezuela, had 130.35 homicides per 100,000 residents.
That's significantly higher than average, but not 'crazy' relative to Venezuela's murder rate of 90 per 100,000.
On the other hand Washington DC was ~70-80 from 1988 to 1998, which would have put it on the current list of top 10 deadliest city's worldwide. DC:
(http://www.chicagotribune.com/news/data/ct-homicide-spikes-c...)
Current top 50: http://www.businessinsider.com/most-violent-cities-in-the-wo...
PS: Homicide rates are not necessarily accurate, but tend to be closer to reality than say rape statistics.