Outside, where a group of protesters gathered, police said that they used pepper spray two times. Four people were arrested.
Trump unleashed some of his usual lines -- "go home to mommy" and "get out of here" during the event Saturday night at the Arvest Bank Theatre.
"We’re going to take our country back from these people," he said. "These are bad, bad people."
Trump begged police to arrest the protesters going forward.
"They deserve to be arrested," he said.
Outside the rally a group of protesters amassed. The city's police chief, Darryl Forte, tweeted that some measures were used to control the crowds.
At an event in Dayton, Ohio today, a man, Thomas Dimassimo, allegedly rushed the stage where Trump was speaking. He was charged with disorderly conduct and inducing panic. It was not clear if he entered a plea or had an attorney, but he was released on bail earlier this evening.
Trump has drawn criticism for his statements about protesters, including saying that he wanted to punch one of them in the face. However Trump has said that he does not condone violence.