Twitter users also weighed in.
I learned tonight that Jimmy Fallon is half the man Stephen Colbert is. I'm so ashamed of Jimmy for "normalizing" Herr Trump.— Robin (@puppymnkey) September 16, 2016
Jimmy Fallon: Don't put Trump on TV & treat him like a buddy & muss his hair. It humanizes a monster. Stop it.— Tim O'Donnell (@TimODee16) September 16, 2016
Fallon admitted the controversy took an emotional toll.
“After this happened, I was devastated. I didn’t mean anything by it. I was just trying to have fun,” he said, adding that he had trouble reading reactions online.
But the funnyman added he does not want to be "bullied" into making more political humor. In contrast to the left-leaning Stephen Colbert, whose program has eclipsed Fallon's in ratings, Fallon has usually taken a more "middle ground" stance.
“I don’t want to be bullied into not being me, and not doing what I think is funny,” he said. “Just because some people bash me on Twitter, it’s not going to change my humor or my show.”