EVERY FRIDAY AND Saturday at 5:45 p.m., over 150 stiff-lipped security guards, marching in squadrons of five, sweep through the Mall of America, rounding up anyone under the age of 16 under the terms of the curfew imposed by the Mall last October. On the Saturday before Mother's Day, a trio of clean-cut, teen-age Mall employees are taking a dinnertime smoke break outside the entrance to the Sears store as armed officers from the Bloomington Police Department hold the door for the exiting minors. "Since they started this thing, I've been a lot more comfortable working out here," one of the rosy-cheeked kids says while fiddling with his earring. "No doubt," his friend agrees, taking a puff. "Not to be racist or anything, but we used to call this place the... More >>>