phillip spencer, an emeritus professor of holocaust and genocide studies at king on the university, has documented now the nazis were able to build a movement based on anti-semitism. it's because the political parties never pushed back, not the social democrats or the communists in germany and not the resistance across the continent. we've got to the remember this because the obscene call of anti-semitism must be condemned every time it is heard. [ applause ] and it's easy for us to look at another country or political party and say enough, do better. it is a tougher conversation when the problem is in our own tent. but we know that we cannot look the other way when people who would otherwise be our progressive allies speak out of ignorance or fear or convenience and they cross a moral line. and so we need to engage in dialogue with people who don't understand, who have questions about israel's founding and israel's current actions. we have to engage. but we have to show people where the moral lines are. [ applause ] which brings me to the second thread of american support for israel, a