Republican presidential candidate Donald Trump has cancelled a rally in Chicago, calling off the event due to safety concerns after protesters packed into the arena where it was to take place.
The announcement that Trump would postpone the rally for another day led the crowd inside the University of Illinois at Chicago Pavilion to break out into raucous cheers.
Meanwhile, supporters of the candidate broke out into chants of "We want Trump! We want Trump!"
There was no sign of Trump inside the arena on the college campus, where dozens of UIC faculty and staff had petitioned university administrators to cancel the rally. They cited concerns it would create a "hostile and physically dangerous environment" for students.
Does tonight's violence impact Trumps campaign? We checked with our political expert, Susan MacManus.
"This certainly has changed the whole dynamic of our discussion of Donald Trump," MacManus said.
MacManus said tonight people witnessed people's raw emotions. She said Trump is the candidate, who has received the most air time, and people have strong feelings about what he says whether they agree with it or not.
"The problem is that going forward with campaigns, we're going to be worried about (these) kinds of protest turning into something else," MacManus said.
The Florida primary is Tuesday and the biggest question now may be whether tonight will sway Florida voters one way or another.
"People who like him like him precisely because he says things that reflect to their freedom of speech, but for others -who are worried about security- and don't like the violence and they haven't voted yet, it could drive them in a different direction," MacManus said.