@matrix In almost every instance of gunning down "nonviolent gang members for a quick buck", those gang members are only nonviolent towards the player, and only as long as the player doesn't approach them. They're in the process of murdering/robbing people or had just finished murdering people, and tell the player to fuck off and not interfere with their business. The map icon for them literally says that they're in the middle of committing a violent crime.
Holy crap I didn't realize that. That's some genius levels of analysis.