It was an example.
What I'm saying is, young people fight. Alot. Often over drugs etc. I'm young, I went to a crummy high school in a crummy neighbourhood, I know.
Most everyday people will assume that it's just another drug fight or something, and will walk on by. "It's not my problem" or "It's probably about something with drugs" etc etc.
Contrary to what most people say, when they see a fight happening they will stand and watch and no one will intervene. I've seen it first hand when I was swarmed. People watched, no one (actually, thats not true, my friend ran in the school to get the rest of my buddies but by then it was over) helped.