What impels some Diaspora Jews to lead the charge against Israel?
You contrast them with the Chinese Diaspora, which appears to react with equanimity to the truly egregious human-rights violations of Beijing. Yes, the Jews, unlike the Chinese, somehow feel pressured to dissociate themselves from their ancestral homeland. You’d have to ask the one-state proponent Tony Judt or the philosopher Judith Butler, who is pushing the anti-Israel boycott, to explain what motivates them and why they are emotionally invested with Israel to such an unhealthy degree.