By Rabbi Yisroel Shusterman
(Note: In honor of Purim, following is a letter from the Lubavitcher Rebbe (OBM) discussing the relevance of Purim to today)
The Jewish Nation: Self Preservation
By Rabbi Menachem M. Schneerson, The Lubavitcher Rebbe
By the Grace of G-d
19 Adar Sheni, 5711 
Brooklyn, New York
…Persia, in the days of Ahasuerus, was the mightiest empire in the world. It also boasted the most advanced civilization of those days. On the other hand, the Jewish people at that time were in despair. The Holy Land and the Beth Hamikdosh [Holy Temple] lay in ruins. The opinion was widely circulated that G-d had abandoned His people. This was supported by miscalculations purporting to show that the period of seventy years' exile prophesied by our prophets was at an end, yet the promised liberation had not come. This, in fact, was one of the reasons why Ahasuerus made that pompous feast and dared to profane the holy vessels.
Under the circumstances, when the head of the mightiest world empire and civilization arranged the royal feast, inviting to it representatives of all nations, the Jews among them, many Jews could not resist the temptation. They were not deterred by the fact that this banquet was to mark the beginning of a new "era" of complete assimilation and were deluded by the friendly slogan of "no compulsion." Thus, they became a party to the profanation of the holy vessels.
Symbolically, the profanation of the holy vessels of the Beth Hamikdosh marked also the desecration of the Divine soul which forms the sanctuary of every Jew and Jewess. The purpose and mission of this Divine spark is to light up one's immediate environment and one's share in the world at large with the light of the highest Divine ideals. Far from fulfilling their soul's mission upon this earth, those weak Jews lent aid and comfort to the forces of assimilation and darkness. By partaking from the "food" of Ahasuerus they contaminated both their bodies and souls.
Purim, therefore, reminds us not to be carried away by the outer sparkle of foreign civilizations or cultures, and not to be misled into assimilation by the notion that it appears to be in no conflict with our spiritual heritage.
We are a unique people, as started in the Megillah: "There is one people (although) scattered and spread among the peoples of the world, (yet) their laws are different from those of other peoples." We have preserved our unity and uniqueness despite our being dispersed in the world, because we have preserved our laws. It is by preserving our Torah and Mitzvoth that we Jews in general, and our youth in particular, can best contribute towards the enlightenment of the world at large and bring real happiness to ourselves, our people, and humanity as a whole…
[Signed: Menachem Scheerson]