The reality of golus is that עשו שונא ליעקב, we must therefore stay attentive to our surroundings.
On Shabbos Parshas Shmini 5750, the Rebbe gave over a captivating sicha that entirely changed our perspective on the concept of עשו שונא ליעקב in a startlingly new way:
The following is summarized, free translation from the sicha above:
We have a known rule: הלכה היא בידוע שעשו שונא ליעקב. This is not only something that existed once upon a time but is also an intrinsic gene, inherited from father to son, from generation to generation, to this present day. This anti-Semitic hatred is only magnified when (in addition to the above) the father brings up his child in this fashion and becomes a negative role model for the son to exemplify.
This leads us to the very troubling conclusion that notwithstanding the favorable position the Jews find themselves in —living in a ‘מלכות של חסד וכו — we must know that a non-Jew still has a חזקת סכנה, and we can never know what the morrow will bring R”L…