Non-Hispanic blacks (2.8 per 1,000) and Hispanics (2.2 per 1,000) had higher rates of nonfatal firearm violence than non-Hispanic whites (1.4 per 1,000)
https://www.bjs.gov/content/pub/press/fv9311pr.cfm
The topic here is not overall gun violence, but specifically the percentage of shootings that result in death, and the fact that this percentage is extremely different in different cities.