Donald Trump threatened to punch a protester in the face on Monday.
The frontrunner in the race to become the Republican presidential candidate was unhappy with the "gentle" way in which a man was escorted out of a rally in Las Vegas.
To cheers from supporters he said: "You know what I hate, there's a guy totally disruptive, throwing punches. We're not allowed to punch back ay more.
"I love the old days. You know what they used to do guys like that in a place like this? They'd be carried out on a stretcher folks."
"Here's a guy throwing punches, nasty as hell, screaming at everting else, when we're talking. And the guards are very gentle with him," he said. "He's walking out, big high fives, smiling, laughing."
Trump added: "I'd like to punch him in the face."
On February 23, Republicans will vote in the Nevada caucuses. Trump has a commanding lead in the polls and is expected to secure an easy victory over rivals Senator Ted Cruz and Senator Marco Rubio.