Trump ends wild day on the campaign trail by calling for protesters to be arrested. The comments capped a tumultuous day on the campaign trail in which a demonstrator rushed a stage where Trump was speaking.

The progressive group MoveOn.org, which has endorsed Sanders, confirmed in a statement Saturday that it helped students print signs for the protests at the Chicago rally and recruit members to attend the “student-led protest.” Sanders on Saturday said his supporters were not to blame for the unrest.