Whatever they did or did not do during the Holocaust, post-war Chabad worked diligently to rebuilt Jewish education and became a worldwide force in Jewish renewal. Inside the USSR Chabniks risked heavy penalties to continue teaching Judaism underground. I wouldn't belittle them.
Islamic State militants blow up ancient Arch of Triumph in Palmyra (Reuters)
from the article: The half-Jewish Nazi who saved the Lubavitcher Rebbe