Elizabeth Warren spoke in condemning terms about some of Democratic frontrunner Bernie Sanders’ supporters when speaking to NBC News on Tuesday, calling out some Sanders supporters for operating with a “foundation of hate.”

Sanders’ competitors and liberal mainstream media outlets have increasingly tried to tar his supporters in an effort to blunt the candidacy of the democratic socialist, as he appears well-positioned to take the nomination.

Warren’s previously warm relationship with the Vermont democratic socialist turned sour last month, when the Massachusetts Senator claimed Bernie told her a woman couldn’t be President. Sanders denied the accusation, and Warren went on to accuse him of calling her a liar on a live debate stage.

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Warren accused Sanders supporters of organizing a harassment campaign against members of a Nevada culinary union that declined to support him.

“I am particularly worried about what happened in the attacks on members of the culinary union, particularly on the women in leadership. That is not how we build an inclusive Democratic Party. … We do not build on a foundation of hate.”

Warren’s line of attack is quite similar to neoliberal Democrats running implicit ‘Never Bernie’ campaigns. Authoritarian oligarch Michael Bloomberg has released ads claiming that Sanders’ movement represents a toxic mob.

Warren claims Sanders supporters are “publishing their personal addresses, their phone numbers, and then making very aggressive threats against their own safety and the safety of their families.”

We need to unite to defeat Trump in November. This type of "energy" is not going to get us there. https://t.co/bPuUZMs2d6 pic.twitter.com/Tdp6mpWjcX

— Mike Bloomberg (@MikeBloomberg) February 17, 2020

Joe Biden also condemned what he interprets as online hate from Sanders supporters, telling mainstream media flack Chuck Todd that the Vermont Senator bears “accountability.” Sanders himself seems skeptical of the narrative, asking who his supposedly malicious supporters are when pressed on the issue.

Heated rhetoric from online leftists now seems to be a front and center issue within the Democratic primary. It’s a bit less clear if the supposed online mobs are really harassing people, or if Sanders’ critics want a free pass from criticism.