Kathleen Geier, a freelance contributor to The Nation and herself a Sanders supporter, says while she has gotten her fair share of ugly online comments from male Clinton supporters, the level of vitriol coming from what she calls a "tiny minority" of Sanders boosters troubles her.
"I think they're doing harm to the cause," she says. "I haven't seen people treat Obama supporters like this, or supporters of other male establishment candidates - just Hillary. So it's definitely misogyny."
Sexism is not the only bad behaviour demonstrated online by Sanders supporters - an ugly racial element has arisen, too.
"I've gotten everything from 'shill', 'paid infiltrator', to flat out having somebody actually call me a N***** in the midst of this," says Elon James White, CEO of This Week in Blackness, who has been critical of Mr Sanders' record on race.
"They harass and try to take away the credibility from the people who question Mr Sanders."
Similarly, after Atlantic author Ta-Nehisi Coates wrote a story criticising Mr Sanders for saying that reparations for African Americans is too "divisive" an issue, he was deluged by negative responses, as was editor and author Jamil Smith of The New Republic, for his own critical piece about Mr Sanders and his trouble appealing to minority voters.
