Democratic presidential candidate Sen. Bernie Sanders (I-VT) asked his supporters Sunday to not engage in acts of violence.

“Any person who is a Bernie Sanders supporter, please, do not in any way, shape or form engage in violence,” Sanders said on CNN’s “State of the Union.” “That is absolutely not what this campaign is about.”

Sanders’ comment came after he was asked about violent protesters who have appeared at presumptive GOP nominee Donald Trump’s campaign rallies with pro-Sanders signs.

Trump was also asked about the violent protesters at his rallies during his Sunday news interviews and he mentioned Sanders’ name.

“Well you’ve got Bernie signs in there. Bernie signs, the same signs that they use at their rallies,” Trump said on “State of the Union.”