At its core, "Mad Men" is about intersectionality; the hierarchy of oppression — be it gender, race or class — that each character attempts to break from. There are different levels of it. Peggy Olson is a white, middle class, Catholic-raised woman fighting for power in a male-dominated industry. But then there’s Rachel Menken, a department store owner who’s not only marginalized for her gender and rare position of power, but also for being Jewish. Sunday evening, in anticipation of the final seven episodes, "Mad Men" creator Matthew Weiner sat down with Rogerebert.com editor-in-chief and New York Magazine TV critic Matt Zoller Seitz at the Museum of Jewish Heritage in New York to discuss the role Jewish identity has played in the crafting of "Mad Men." And surprisingly enough, it appears to be one of Weiner’s greatest influences. READ MORE: 7 Clips That Define 'Mad Men' & What the Cast Has to Say About Them It's surprising...