I recently was the beneficiary of some street gang education from a LEO. This knowledge opened my eyes, practically all gangs got their start in California. Some are race specific while others are equal opportunity offenders. The common theme is that they commit crimes in groups of 3 or more and they almost always do not get along (with rival gangs). It was asked if there was any information on the internet about gang ID and the answer was "no" because that may lead to further gang involvement.
This Shreveport shooting sounds like it may be gang related but there is insufficient info to tell.