Nevada's Democratic party is warning that chaos at its state convention this weekend shows that Sen. Bernie Sanders' insurgent campaign has a penchant for violence.
The state party makes its allegation in a letter to the Democratic National Committee warning that Sanders supporters may try to disrupt the party's national convention the way they did the Nevada one.
The Nevada convention was shut down by security Saturday night after Sanders supporters shouted down speakers and at one point threw chairs in protest.
The state party chairwoman has received numerous death threats since then.
Sanders supporters were protesting convention rules that awarded the majority of Nevada's delegates to Hillary Clinton.
Clinton won the state's caucuses but some Sanders backers hoped they could win more delegates at the convention.
It's also a warning sign to Democrats who will need support from Sanders voters to defeat Donald Trump in November.
Trump has made a point of trying to woo Sanders voters.
The Vermont senator has responded with fierce criticism of the presumptive Republican presidential nominee.