Joe Biden joined a UAW picket line on Tuesday – the first president ever to do so. Harold Meyerson comments.Plus: the right-wing supermajority on the Supreme Court has returned to a case about racial gerrymandering in Alabama, where Republicans have defied the Court’s order.  Dahlia Lithwick will comment about that, and about her book Lady Justice: Women, the Law, and the Battle to Save America—it’s out now in paperback.Also: Adam Hochschild reports on visiting a gun show,  and explains why the Koch Brothers are major funders of the NRA—even though they are not especially enthusiastic about guns. (Broadcast originally in April, 2018).