Rather than guarding against anti-Semitism, the insults, coarseness, irrationality and dishonesty of the Jewish rightwing risks setting off an anti-Semitic backlash.
Importantly, it is well to keep in mind the historical experience of the Jews: in the past two thousand years Jews have frequently been a tolerated minority, and sometimes have even risen to powerful and respected positions in some of the most advanced and civilized states—like England, Spain, Portugal, France, and of course Germany—only to see their social standing, their accomplishments, their livelihood and often their very lives suddenly swept away by a deadly outbreak of anti-Semitism. In light of this history, the possible resurgence of anti-Semitism in the West cannot be entirely discounted, for it has never been definitively defeated and eliminated and has always survived, even if deep under the surface, as if lying in wait for some national political or economic crisis to once again burst out in full fury.