Protestors gathered Friday night outside Senate Majority Leader Mitch McConnellMitch McConnellMedicaid becomes big threat to GOP’s healthcare revival Unresolved issues, very little time for Senate GOP Valerie Jarrett slams GOP for not including women in healthcare discussions MORE's (R-Ky.) home in Louisville to read Coretta Scott King's 1986 letter against new Attorney General Jeff SessionsJeff SessionsOvernight Regulation: Trump pick would swing labor board to GOP | House panel advances bill to slow ozone regs | Funding bill puts restrictions on financial regulators Overnight Tech: Trump targets Amazon | DHS opts for tougher screening instead of laptop ban | Dem wants FBI to probe net neutrality comments | Google fine shocks tech DOJ hosts Pride party honoring transgender student from bathroom case MORE.

The letter rose to controversy earlier this week when Sen. Elizabeth WarrenElizabeth WarrenWarren goes on tweetstorm over GOP ObamaCare repeal bill Warren: Dems should campaign on single-payer healthcare plan Senate Dems step up protests ahead of ObamaCare repeal vote MORE (D-Mass.) tried to read it ahead of a floor vote on Sessions's confirmation. McConnell led a GOP vote to bar her from speaking.

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“Sen. Warren was giving a lengthy speech,” McConnell explained. “She had appeared to violate the rule. She was warned. She was given an explanation. Nevertheless, she persisted.”

The phrase by McConnell has since been turned into a "feminist rallying cry."

According to reports, about 400 protesters gathered Friday night to read the letter by King. They shared their experience on social media sites, with the #LetterToMitch and #LetLizSpeak.