By 9 a.m. on a Sunday morning a few weeks ago, some 100 Washingtonians, most dressed in Sunday jeans, with some leftover yawns of the night before, pulled up to the Washington DC Jewish Community Center to start their day. While the fitness center is the usual destination at that hour on that day, that weekend the crowd was there to work their minds and spirituality. The event was the first ever "yom iyun" (day of study), "Jews and Power: Ambivalence or Embrace," hosted by Mechon Hadar, an egalitarian educational institution based in New York City that focuses on Jewish practice, Torah study and prayer...