joining me are heather mcghee and jared bernstein and former economic adviser to vice president joe bideno start with you. we talk about the potential negative consequences of inequality in the u.s., some of which i think are already manifest manifested. in brazil it's much clearer, though. how has really dramatic inequality undermined their social fabric and political institutions. >> well, the first word that comes to mind is social and economic mobility. one of the problems we have when we're talking about inequality, i've been dealing with this issue for decades. what i used to do is put up a slide and say, look, there's a lot of inequality and people might say, oh, that's discomforting. what we're trying to do now, what research is moving towards, is trying to look at precisely what your question is getting at. what are some of the implications? what are some of the societal problems? one of the most important is that when levels of inequality become too high, become so excessive, and brazil is an excellent example, the ability of people to move out of the bottom and into the middle