saying dream big, fight hard and win. she is joining the fight for the white house 2020. quoting her, she says, i'm not afraid of a fight, not even a hard fight and she is joining ago crowded democratic field already. let's go to m.j. lee who was at that event. huge crowd there and she made it very clear what she will be fighting for. she will be fighting to keep the powerful, hold them accountable. and she also said they would be thinking of children across america, fighting for them and their possibilities to dream and deal big. >> that's right, fred. it's very loud here because warren has just finished. she has officially announced she is rubbing for president of the united states. if you were listening carefully to the speech, you may have lost count of the number of times she used the word "fight." i can tell you this is going be to the backbone of her candidacy and her campaign. this fundamental idea that when