Tzitzit and has developed his own tie which is widely used. Other views In a December 2006 speech, Schachter stated that mesirah (informing on a fellow Jew to the authorities) "is permitted in situations where one is a public menace (see Shach to Choshen Mishpat 388, 59), or if one is physically or psychologically harming another individual (for example, in instances of sexual abuse of children, students, campers etc., or spousal abuse) (see Shach to Choshen Mishpat ibid, 45)." In a February 2013 speech to a London audience, Schachter echoed this sentiment. He did express concern that before going to the authorities, one should make sure that a potential abuse victim is credible by referring him to a competent rabbi or psychologist. Schachter cited concerns that if the child's story was a fabrication, it could result in a Jew's being locked "in a cell with a shvartze, in a cell with a Muslim, a black Muslim who wants to kill all the Jews." Yeshiva University condemned the use of the term shvartze (the Yiddish word for black, racially loaded when directed at a person): "The recent use of a derogatory racial term and negative characterizations of African-Americans and Muslims, by a member of the faculty, are inappropriate, offensive, and do not represent the values and mission of Yeshiva University", a YU spokesman stated. Schachter is endorsed by the Organization for the Resolution of Agunot, a non-profit organization that advocates for the elimination of abuse from the Jewish divorce process by, among other things, organizing public protests to compel husbands to grant their wives gittin (religious divorce documents). David Eidensohn, a Monsey, New York rabbinical judge who believes that coercing gittin renders the divorces invalid, has accused Schachter of misquoting Maimonides in public lectures to the effect that beating husbands is a valid procedure in these cases. Works Schachter has written many books related to Judaism. They include: Eretz HaTzvi (1992) (with an approbation by Rabbi Dovid Lifshitz) Nefesh HaRav (1994) - Torah from Rabbi Joseph B. Soloveitchik B'Ikvei HaTzon (1997) (with an approbation by the famed Rabbi Pinchas Hirschsprung, the former Chief Rabbi of Montreal) Shiurei ha-Rav ha-Gaon Rabi Yosef Dov ha-Levi Soloveitchik, Masekhet Gittin, chap. 1-4 [based on lectures from 1963-1964] (1999) Shiurei ha-Rav ha-Gaon Rabi Yosef Dov ha-Levi Soloveitchik, Masekhet Kiddushin (2001) MiP'ninei HaRav (2001) - more Torah from Rabbi Joseph B. Soloveitchik Shiurei ha-Rav ha-Gaon Rabi Yosef