In 2011, 83% of murders involved a firearm, and 6.4% were the result of a stabbing. 10% of murders in 2011 were the result of an armed robbery and at least 60% were gang or gang narcotics altercations. Over 40% of victims and 60% of offenders were between the ages of 17 and 25. 90.1% of victims were male. 75.3% of victims and 70.5% of offenders were African American, 18.9% were Hispanic (20.3% of offenders), and whites were 5.6% of victims (3.5% of offenders).