Minneapolis PD found somebody had brought a cart (shopping cart?) full of rocks up to a position near their precinct station.
now they are trying to put up a new barricade after having found the enemy "ammo dump".
10-handle means the exchange rate would be 10 yuan = 1 US Dollar.
Currently the rate is around 7.15 yuan to one USD. So the jargon is: the rate is near the seven-handle.
minneapolis officers are having bricks thrown at them
still unclear if reinforcements from Milwaukee or other cities are on the way.