Donald TrumpDonald TrumpTrump cheers on Senate Republicans ahead of skinny ObamaCare repeal vote Live Coverage: Senate edges close to passing scaled-down ObamaCare repeal Pete King defends ‘unorthodox’ Scaramucci after attacks on Priebus MORE said he has 'no regrets' about his past language toward event protesters after he had to cancel a rally in Chicago because of massive demonstrations. 

Trump has faced criticism for his attitude toward protesters -- at one event he said he would like to punch a protester in the face himself. 

"I hope my tone is not that of causing violence," Trump told CNN's Don Lemon. 

But he said he doesn't regret his language. 

"No, I don't regret it at all," he said. "Some of these protesters were violent." 

Trump denied that his supporters sometimes incite violence agianst peaceful demonstrators. 

"I know more about protesters than you'll ever know," he said. "Some of them are very violent and I'm not even sure they can control themselves." 

Trump wouldn't say that he would encourage his supporters to ease up on protesters. 

He did say that he would be willing to meet with protest groups.

"I wouldn’t mind meeting them if the meeting was in good faith," he said. "I don’t mind meeting with protesters as long as I know its in good spirits and they're not professional agitators."