Sen. Elizabeth Warren, D-Mass., speaks on the floor of the U.S. Senate on Feb. 7, 2017. (Screen grab from C-SPAN)

(CNSNews.com) - A liberal advocacy group is already fund-raising off Tuesday's Elizabeth Warren kerfuffle, urging fellow Democrats, "Let's turn this outrage into a fiasco for the GOP."

Warren had been speaking on the Senate floor for more than 45 minutes Tuesday night -- and she had already been warned once -- when Senate Majority Leader Mitch McConnell (R-Ky.) invoked Senate rule 19 to shut her down.

"The senator has impugned the motives and conduct of our colleague from Alabama, as warned by the chair," McConnell said. "Senator Warren, quote, said, 'Senator Sessions has used the awesome power of his office to chill the free exercise of the vote by black citizens.'"

Sen. Warren was actually quoting the words of Coretta Scott King, who wrote a letter 30 years ago objecting to Sessions' nomination to a federal court.

She had already finished reading King's letter in its entirety -- and had been warned once before about Senate rules -- when McConnell interrupted her again.

McConnell invoked Senate rule 19, which forbids a senator “directly or indirectly, by any form of words, imput(ing) to another Senator or to other Senators any conduct or motive unworthy or unbecoming a Senator."

By quoting Coretta Scott King's letter, which Warren read in its entirety, she was "indirectly" imputing Sen. Sessions' conduct and motives.

Warren objected: "I am surprised that the words of Coretta Scott King are not suitable for debate in the United States Senate. I ask leave of the Senate to continue my remarks."

"I object," McConnell said.

"The Senator will take her seat," the presiding chairman said. McConnell later noted that Warren had been warned, "but she persisted."

In her blistering speech against Sen. Jeff Sessions' nomination to be the next attorney general, Warren not only read from long-ago letters and speeches imputing his motives and conduct. She flat-out accused Sessions of harboring "dangerous, toxic hatred."

To put Senator Sessions in charge of the Department of Justice is an insult to African-Americans.

To put Senator Sessions in charge of the Department of Justice is a direct threat to immigrants.

To put Senator Sessions in charge of the Department of Justice is a deliberate affront to every LGBTQ person.

To put Senator Sessions in charge of the Department of Justice is an affront to women.

Warren also mocked Republican senators who support Sessions' nomination, accusing them of "launching a massive PR campaign to try to repair his public image."

After she'd been silenced, Warren falsely claimed that Sen. McConnell had "silenced Mrs King's voice on the Sen floor." In fact, Warren read King's very long letter in its entirety, and she had moved on to other complaints when she was finally interrupted by McConnell and asked to take her seat.

Afterwards, Warren tweeted her outrage and re-read King's speech in another room (posting the whole thing on Facebook).

Meanwhile, the liberal advocacy group MoveOn.org was sending emails, howling that "Senate Republicans silenced Senator Elizabeth Warren and banned her from speaking on the Senate floor...Click here and donate to Elizabeth Warren's reelection campaign."