Senate Democrats are taking to the Senate floor to read Coretta Scott King's letter after Sen. Elizabeth Warren Elizabeth WarrenNo new taxes for the ultra rich — fix bad tax policy instead Democrats back away from quick reversal of Trump tax cuts It's time for newspapers to stop endorsing presidential candidates MORE (D-Mass.) was temporarily banned from speaking.

"The idea that a letter and a statement made by Coretta Scott King, the widow of Martin Luther King Jr. ... could not be presented and spoken about here on the floor of the Senate is, to me, incomprehensible," he said from the Senate floor.

Many thanks to @SenatorTomUdall for reading Coretta Scott King’s letter on the Senate floor. https://t.co/RFYAplSNyC — Elizabeth Warren (@SenWarren) February 8, 2017

Thank you @SenSherrodBrown. Coretta Scott King will not be silenced. https://t.co/dqNl2iQq1F — Elizabeth Warren (@SenWarren) February 8, 2017

Senate Majority Leader Mitch McConnell (R-Ky.) interrupted Warren on Tuesday night and said that she had violated Senate rules by impugning her colleague, Sessions, President Trump's pick for attorney general.

Senate Republicans voted to rebuke Warren, and she is barred from speaking on the Senate floor through Wednesday evening, when lawmakers will wrap up the debate on Sessions' nomination.

A progressive outside group blasted Republicans as being "sexist" for allowing the male Democratic senators to read part of the letter but not Warren.

“It is unbelievably hypocritical and sexist for Mitch McConnell Addison (Mitch) Mitchell McConnellSenate Republicans signal openness to working with Biden Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll The Hill's Campaign Report: Biden asks if public can trust vaccine from Trump ahead of Election Day | Oklahoma health officials raised red flags before Trump rally MORE to silence Sen. Warren citing the words of a civil rights hero, but allow her male colleagues to speak the very same words without objection," said Kait Sweeney, a spokeswoman for the Progressive Change Campaign Committee.

- Updated at 1:52 p.m.