“I think a campaign bears responsibility for creating an environment, when the candidate urges supporters to engage in physical violence to punch people in the face,” Sen. Ted Cruz said, speaking to reporters at Rolling Meadows, Illinois. “The predictable consequence of that is that it escalates. And today is unlikely to be the last such instance…That’s not how our politics should occur.

“You know, the city of Chicago in 1968, saw some ugly days when politics descended into hatred and instability and even violence. It is my hope that in 2016 we can appeal to our better angels and avoid going down that road once again.”…

“I should point out there isn’t violence at my events,” Rubio said. “There isn’t violence at Ted’s events. There isn’t violence at a Kasich event. There isn’t violence at a Clinton event.”

“There is only one presidential candidate who has violence at their events. And I do think Donald needs to realize and take responsibility for the fact that some of the rhetoric he has used could be contributing to this environment that is growing increasingly disturbing for a number of Americans,” Rubio told ABC News at a media availability in Naples, Florida.