“This is Chicago, protesters are an industry,” Rubio said on Fox News late Friday. “It is clear, just from watching some of these images, that this was an organized effort, an orchestrated effort, from groups that wanted to disrupt this event, and Chicago is a hub for that sort of activity.”
But Rubio added that Trump “bears some responsibility for the general tone” at his rallies.
“He most certainly … has in the past used some pretty rough language, saying, ’In the good old days we used to beat these people up,’ or ‘I’ll pay your legal bills if you rough them up,’ ” he added.
In a separate news conference on Friday, the Florida senator was even harsher toward Trump, saying the businessman “clearly has used language that appeals to anger.”
“I would point out there isn’t violence at my events,” Rubio said, adding that the same can be said of rivals Ted CruzRafael (Ted) Edward CruzBooker, Harris have missed most Senate votes O'Rourke sweeps through Virginia looking to energize campaign Disney to donate million to rebuild Notre Dame MORE and John Kasich, as well as Democratic presidential candidates Hillary ClintonHillary Diane Rodham ClintonGrassroots America shows the people support Donald Trump Ex-FBI official: 'Links and coordination' with Russia happen everyday Ex-FBI agent: Americans should be 'disgusted' by Russian interference in Mueller report MORE and Bernie SandersBernard (Bernie) SandersGrassroots America shows the people support Donald Trump Five former Obama ambassadors back Buttigieg Both sides were wrong about Mueller report, and none of it will likely matter for 2020 MORE.
“There’s only one presidential candidate who has violence at their events,” he concluded. 
“And I do think Donald needs to realize and take responsibility for the fact that some of the rhetoric he has used can potentially be contributing to this environment.”
Trump’s Chicago rally Friday night was called off amid massive protests.
The businessman’s supporters and protesters clashed into the night on the streets. 
Trump slammed the protesters in an MSNBC interview late Friday night.
"It's a little bit sad when you can't have a rally in a major city in this country,” he said. “What ever happened to freedom of speech? What ever happened to the right to get together?"