As a traditional Jew, I have benefited personally from the hospitality of Chabad Hasidim on many occasions, and I marvel at how many Jews Chabad has brought back to their primordial home.
Proselytizing is only wrong if coercive or deceptive. Coercion, whether violent or not, is immoral, just as deception is immoral.
Roots can live without branches, although truncated; branches cannot live without roots.
The Holocaust, taken by itself, is a black hole. To look at it directly is to be swallowed up by it.
Unlike the issue of messiahhood, which arose when Jews and Christians were members of the same religio-political community and spoke the same conceptual language, the issues of the incarnation and the Trinity divide people who are no longer members of the same community and who no longer speak the same language.