U.S. Republican presidential front-runner Donald Trump on Saturday blamed supporters of Democratic candidate Bernie Sanders for protests that shut down his Chicago rally, calling the U.S. senator from Vermont "our communist friend".
Trump's Republican rivals, meanwhile, hurled scorn at the New York billionaire, saying he helped create the increasingly tense atmosphere that is now sweeping the race for the White House with his fiery rhetoric.
Trump, who has rallies in Ohio and Missouri on Saturday, canceled the Chicago event on Friday after it turned chaotic, with scuffles breaking out between protesters and backers of the real estate magnate.
The clashes follow a slew of recent incidents of violence at Trump rallies, in which protesters and journalists have been punched, tackled and hustled out of venues, raising concerns about degrading security leading into the Nov. 8 election.
"All of a sudden a planned attack just came out of nowhere," Trump said at a rally in Dayton, Ohio, Saturday morning, calling the protest leaders "professional people".
He said his own fans "were taunted, they were harassed by these other people, these other people by the way, some represented Bernie, our communist friend."
"Now really Bernie should tell his people...he should really get up and say to his people 'stop, stop,'" he said.
A spokesman for Sanders, a self-described Democratic socialist, did not immediately respond to a request for comment.
Earlier on Saturday Trump called the protesters thugs.
"The organized group of people, many of them thugs, who shut down our First Amendment rights in Chicago, have totally energized America!" Trump said on Twitter.
The First Amendment to the U.S. Constitution protects freedom of speech and assembly. The Chicago rally came ahead of five primary elections on Tuesday, including contests in Ohio and Illinois.
Got to love our media saying just the right words to plant a bad image in you mind about Sanders.
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What does that mean people? No... you republicans need to answer it.