More or less agree that he is in the wrong, but I'm not sure I agree with everyone bashing him here.

Extreme situations have weird effects on people. Some people come out of extreme persecution as better people, their eyes opened to the possibilities of human savagery and so become dedicated to protecting other people from it. Others come out convinced that the whole world is against them and that they must take any means necessary to survive. It would appear that Wiesel is in the latter.

While being a Holocaust survivor does not make him correct by default, I do think that it earns him a reprieve from the worst of the backlashes. Think of him like a Dog who snarls at everyone because of excessive kicking as a puppy. It's nothing to get angry about, (except at those who kicked him,) it's just sad.

You cannot automatically expect someone who has come through a great tragedy to be empathetic, especially towards a group that has occasionally expressed desires to start the killing again. Sometimes the scars don't permit it, and we who do not have them do not really have the right to judge them.

Those scars do not make him right. They do, however, offer clues as to why, precisely, he is wrong.