Is Thanksgiving Kosher?

My Gemara class today raised the question of Jews celebrating Thanksgiving.  It is in fact a real halachik issue with varying opinions.  See here for a comprehensive article on the subject by Rabbi Michael Broyde on the subject.  His summary of the approaches (kudos to Rachel Olshin who told the class about the Rav's practice of ending shiur early).

In sum, three premier authorities of the previous generation have taken three conflicting views.
Rabbi Hutner perceived Thanksgiving as a Gentile holiday, and thus prohibited any involvement in the holiday. Rabbi Soloveitchik permitted the celebration of Thanksgiving and permitted eating turkey on that day. He ruled that Thanksgiving was not a religious holiday, and saw no problem with its celebration. Rabbi Feinstein adopted a middle ground. He maintained that Thanksgiving was not a religious holiday; but nonetheless thought that there were problems associated with "celebrating" any secular holiday. Thus, while he appears to have permitted eating turkey on that day, he would discourage any annual "celebration" ⁽⁵⁰⁾ that would be festival-like.

 In the end, Rabbi Broyde himself concludes that:

This article has so far avoided any discussion of normative halacha. Such cannot, however, be avoided, at least in a conclusion. It is my opinion that this article clearly establishes that: (1) Thanksgiving is a secular holiday with secular origins; (2) while some people celebrate Thanksgiving with religious rituals, the vast majority of Americans do not; (3) halacha permits one to celebrate secular holidays, so long as one avoids doing so with people who celebrate them through religious worship and (4) so long as one avoids giving the celebration of Thanksgiving the appearance of a religious rite (either by occasionally missing a year or in some other manner making it clear that this is not a religious duty) the technical problems raised by Rabbi Feinstein and others are inapplicable.  Thus, halacha law permits one to have a private Thanksgiving celebration with one's Jewish or secular friends and family. For reasons related to citizenship and the gratitude we feel towards the United States government, I would even suggest that such conduct is wise and proper.  It has been recounted that some marking of Thanksgiving day was the practice of Rabbi Joseph B. Soloveitchik, thus adding force to our custom of noting the day in some manner.  Elsewhere in this article it is recounted that Rabbi Joseph B. Soloveitchik would reschedule shiur on Thanksgiving day, so that shiur started earlier, and ended earlier, allowing the celebration of Thanksgiving. It is important to note the Torah study was not canceled, or even curtailed. Rather, the day was rearranged to allow for a full compliment of Torah, hand in hand with the requisite "civil celebrations." That too is an important lesson in how we should mark Thanksgiving.
Torah learning must be an integral part of what we do, and how we function. Sometimes, because of the needs of the times or our duties as citizens, we undertake tasks that appear to conflict with our need to study and learn Torah. But yet we must continue to learn and study. Thus, Rabbi Soloveitchik did not cancel shiur on Thanksgiving. We, too, should not forget that lesson. Torah study must go on.

 With that lesson in mind, I encourage you all to join us for Black Friday Shiur, this Friday.  אנו משכימים והם משכימים...