Republican presidential front-runner Donald Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE, on the eve before the critical Indiana primary, said his campaign rallies are one of the "safest places you can be."

That comment came a few days after violent protests erupted outside of the California GOP convention, which saw about 20 people arrested during Trump's speech last week in Costa Mesa, Calif.

“The truth is at the Trump rallies, it’s the safest place you can be because we look out for each other, and we look out for everybody," Trump said at a rally in South Bend, Ind., one day before the primary there.

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Trump condemned the violence that emerged last week in California and noted that subsequent campaign events have been peaceful.

"People were burning the American flag. I don’t want to burn it. The people outside, they’re agitators," Trump said.

"You don’t see that at all [inside here]. We’ve been through days where you don’t see it," he added.

Back in March, Trump canceled a rally in Chicago amid huge protests outside of the arena, and at another rally, a man was charged with assault and battery after video surfaced showing him punching a man in the face.

The real estate mogul has been accused of stoking violence at past rallies. Earlier this year, Trump said he wanted to punch a protester in the face.

Other times, Trump has urged his supporters not to hurt the protesters that have interrupted his speeches.

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Trump leads Sen. Ted Cruz Rafael (Ted) Edward CruzSenate Republicans face tough decision on replacing Ginsburg Cruz: Trump should nominate a Supreme Court justice next week Renewed focus on Trump's Supreme Court list after Ginsburg's death MORE (R-Texas) in polls of the Hoosier State as he seeks to lock up the nomination and avoid a contested Republican National Convention. Cruz faces a do-or-die situation Tuesday in Indiana, and he's already mathematically eliminated from winning on the first ballot.

On Monday night, Trump repeatedly attacked Cruz, constantly referring to him by his favorite nickname, "Lyin' Ted."

"I think [Cruz's] crazy. Lyin’ Ted doesn’t have the temperament to do this," Trump said. "We have to put him away tomorrow folks. We have to get out and vote."

Trump said his rally on Monday night had upward of 8,000 people, which included two additional areas outside of the main room.

“If we win in Indiana, it’s over with folks, and then we focus on [Democratic front-runner] Hillary Clinton Hillary Diane Rodham ClintonWhat Senate Republicans have said about election-year Supreme Court vacancies Bipartisan praise pours in after Ginsburg's death Trump carries on with rally, unaware of Ginsburg's death MORE,” Trump said.