Just before I came here to the Briefing Room this afternoon, I was re-reading Thomas Chittum's "Civil War II".
My reading today was in the chapters focusing on urban gangs.
An excerpt:
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"When civil authority breaks down in America, our criminal gangs will instantly fill the power vacuum, just exactly as has been the pattern in other lands. The gangs have the organization and firepower to serve as the nucleus for actual armies. And since they will be self-financed in the coming time of chaos, they will grow like wildfire. Militias, cults like the Nation of Islam, and other armed organizations will also rapidly grow into full-blown armies."