Kiraly Street is the new mecca for the younger generation in Budapest. By day shoppers frequent its upscale boutiques, coffee shops, and designer outlets. After dark it hops with nightlife, offering restaurants with multi-ethnic cuisine, ruin pubs, and entertainment venues. It is the new place to see and be seen. But few realize that the glitz and glamour of Kiraly Street rose from a monstrous darkness. Not so many years ago it was the ghetto of Budapest, where Jews were separated…