News that the original Law & Order has been canceled after 20 years may have Lt. Anita Van Buren (S. Epatha Merkerson) turning in her gun and badge, and drawing a well-deserved pension. Not so long ago, Merkerson was one of a handful of black actors playing cops, not just robbers, on television. Today, there are scores in roles on the right side of the law. See a few of the more familiar faces.