Craig boswell has the details. Reporter protesters clashed with officers and with each outside the university of illinois, after donald trump postponed his rally because of safety concerns. Thank you very much for your attendance, and please go in peace. [ crowd noise ] reporter the crowd of thousands erupted after the announcement. Fights broke out, as people confronted each other. Some got violent. At least one person charged the podium. The crowds spilled out onto the streets of chicago. Once in a lifetime to see a president ial candidate and to walk outside, people are just yelling at you. Power to the people power to the people im happy they didnt allow this in our city reporter some say postponing the rally was a mistake. Its a bad ed behavior. Reporter donald trump called in to cnbc to defend the move. Chicago is the home of very bad rallies. I didnt want to see that happen. So i made the decision. Reporter earlier friday, 32 people were arrested at trump rally in st. Louis. The