Donald Trump's recent outbursts against Representatives Alexandria Ocasio-Cortez, Ilhan Omar, Rashida Tlaib, and Ayanna Pressley have been roundly condemned. But what has often been neglected in the ensuing controversy is the background in Nancy Pelosi's extraodinary attacks on the four congresswomen. Instead, argues Eli Zaretsky, what we need is a Democratic party who, unlike Pelosi, can stand up for the most vulnerable.