Some are suggesting that Turner's treatment by the DNC comes as a result of her refusal to formally endorse Hillary Clinton.
At the convention Tuesday, AOL News reports, high-profile Sanders backers expressed their discontent during a meeting outside of the convention.
"Sarandon, joined by Danny Glover, Rosario Dawson and Shailene Woodley, among others, spoke in support of Turner," AOL News notes. "The celebrities stated that it was unfair to silence a major voice in the Democratic party and that many Bernie supporters are upset."
Turner, for her part, has remained remarkably composed throughout the ordeal, and she has urged Sanders supporters to stay focused on the issues of concern to the American people.
"There are a lot of people that are discouraged," she said, according to AOL News. "I want to keep the supporters knowing that the future's still bright and that there's still complicit energy towards making this work."
Before the convention began, rumors were spreading that the Sanders camp was preparing to put Turner forward as the vice presidential candidate as an alternative to Tim Kaine, who was selected by Hillary Clinton as her running mate.
Turner has denied that she ever wanted the vice presidential spot, telling Sanders supporters that there are more important things to worry about.
"Sanders supporters... are very frustrated and upset," Turner said in an interview with USA Today, discussing the primary process and the Sanders agenda.
Then, in response to the rumors that she was going to make a pitch for the vice presidential role, she told USA Today, "Any presidential candidate has the right to pick their vice presidential running mate. We've got to keep our eye on the movement."
[Photo by Joshua Lott/Getty Images]