One noontime a few weeks ago, I went to lunch with a colleague from the University of Minnesota. We strolled around the corner from our offices to a mutually favorite spot, the Afro Deli, for a hybrid meal of gyro, samosas, falafel, and chai. This Afro Deli location was part of a local chain that had been founded by an immigrant from Djibouti who won a national award as small-business owner of the year . Half of the lunchtime crowd hailed from the university campus, half from the surrounding