"You dirty Jew!" Those were the last words my paternal great-grandfather would hear as he was shoved down an elevator shaft at Henington Hall on the Lower Eastside of Manhattan in the early 1900s, as told by my family. My great-grandfather, Yehoshua Henig, and his relatives, had built Henington Hall as a catering facility and community center to serve the needs of Jewish immigrants who had settled in lower Manhattan at the turn of the century. I was told that one day, an employee who'd had too much to drink, began a quarrel with my great-grandfather, a devoutly religious man...