No, I'd say events of that size are going to introduce political anarchists (as in wanting the Anarchic school of government structure) which in turn attracts the morons who run around in defense structures breaking stuff. The black supremacists were likely Nation of Islam and/or New Black Panthers, both of whom are very well armed, very disciplined and have terrible fashion sense.
Think that was directed at me, but not specifically at Rozalia.
Police being the only likely pseudo-military unit their glorified hunting rifles that might keep them free for a few additional areas.