Democratic presidential front-runner Hillary ClintonHillary Diane Rodham ClintonThe curious case of the COVID-19 origin Harris headlining Asian American Democratic PAC's summit Congress won't end the wars, so states must MORE called for a stop to violence at Donald TrumpDonald TrumpGOP-led Maricopa County board decries election recount a 'sham' Analysis: Arpaio immigration patrol lawsuit to cost Arizona county at least 2 million Conservatives launch 'anti-cancel culture' advocacy organization MORE's campaign rallies in an interview that aired Sunday, blaming the presumptive Republican presidential nominee for setting a "very bad example." 

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"This has to end. He set a very bad example. He created an environment in which it seems to be acceptable for someone running for president to be inciting violence, to be encouraging his supporters," Clinton said on CNN's "State of the Union." 

"Now we're seeing people who are against [Trump] responding in kind. It should all stop. It's unacceptable." 

A recent Trump rally in San Jose, Calif., was marred with violence by anti-Trump demonstrators. 

Nearly 400 protesters gathered outside the Trump event. Four people were arrested, including one for assault with a deadly weapon, according to ABC News.