I don't like to openly speculate theories this early, but it's sad that people are not understanding that he isn't above this being gang-related, no matter how much good you see him do (or how much dirt you may not see). Sadly, in the words of Nip himself, "Bullets Ain't Got No Names."
They don't realize it's real outside and ANYBODY can get it. Nobody untouchable and it doesn't have to be some elaborate plot.
"If anything in this life is certain, if history has taught us anything, it's that you can kill anyone." -Michael Corleone