>> i think people looked at it like -- in the room i hear a father protecting his son, that there was this guy that had come for a fight and biden was just not having any of it. i actually think that people are more concerned that our democratic candidate is willing to go toe to toe in the campaign, and i think joe biden has demonstrated he's not going to sit back and take it. and so i don't think that hurts him, i think that probably in the end he just looks like a dad defending his son. i don't think charlie is wrong that he needs actually a better talking point around the issue, but i don't think people begrudge him the passion around it. >> biden isn't the only one sparring. elizabeth warren and pete buttigieg are going after it against each other about her tax returns and about buttigieg's refusal to allow the press, you know, to cover his fundraising