This will be used as a justification later for the complete takeover of local police departments.
Bingo! You figured it out. That is the Plan. The Feds have been selling MRAPS designed for military combat to police agencies nationwide for pennies on the dollar. They have been supplying them with military gear, ammo, automatic weapons, body armor, grenades, etc. All lethal weapons of War. The Feds under Obama/Holder constantly threaten to pull money to any State or agency that will not play ball. Once Imam/Holder take Ferguson, the rest will fall into line.