Someone came by searching for “what percentage of american murders are gang related.”
Since all murders are not solved, and an actual motive is only a matter of conjecture for many more, an exact answer is not possible.
Doing some data mining with 2010 numbers, and extrapolating from the number of murders solved by arrest to all known murders, it appears that approximately 78 percent, slightly more than three out of every four murders, are gang related.
For 2010, the FBI reported 14,478 murders and non-negligent homicides. Of those, approximately 11,290 were in some way gang related.
And, for those of a thoughtful turn of mind, those numbers mean that were it not for gang activity, the United States homicide rate would be in the 1 per 100,000 range.