Sen. Elizabeth Warren ripped efforts by Sen. Bernie Sanders's campaign to attack her as only appealing to "affluent" and "highly educated" voters.

"I was disappointed to hear that Bernie is sending his volunteers out to trash me," said Warren on Sunday. "Bernie knows me and has known me for a long time."

Warren, 70, called for "Democrats to unite" and defended the "grassroots coalition" she is building ahead of the 2020 presidential election.

"We cannot nominate someone who takes big chunks of Democratic coalition for granted. We need someone who can bring our party together," said the Massachusetts senator.

Warren hits back: “I was disappointed to hear that Bernie is sending his volunteers out to trash me. Bernie knows me and has known me for a long time...I hope bernie reconsiders and turns his campaign in a different direction.” Also notes the “factionalism” caused by 2016 https://t.co/ER0Vm6sgJS pic.twitter.com/N8prZdeZk9 — Alex Thompson (@AlxThomp) January 12, 2020

The Vermont senator's campaign provided volunteers with a script talking points for when they encounter voters who prefer one of the other 2020 Democratic primary candidates. Under Warren's section, the memo highlighted her support among wealthier voters and suggested that she brings "no new bases to the Democratic Party."

Warren's campaign has attempted to appeal to the liberal wing of the Democratic Party, where Sanders, 78, holds a distinct advantage over every candidate in the race. She called on Sanders to "reconsider" his strategy against her.

"I hope Bernie reconsiders and turns his campaign in a different direction," added Warren.