A Mitzvah tank is a vehicle used by the Orthodox Jewish practitioners of Chabad-Lubavitch Hasidism as a portable "educational and outreach center" and "mini-synagogue" (or "minagogue") to reach out to non-observant and alienated Jews. Mitzvah tanks have been commonplace on the streets of New York City since 1974. Today they are found all over the globe in countries where Chabad is active. The word Mitzvah means a "commandment" of the Torah in Judaism, but also carries with it the connotation of...