WASHINGTON (CBSDC) — Sen. Elizabeth Warren, D-Mass., fired back at an ad that ran several times during Tuesday night’s Republican presidential debate.

The conservative American Action Network launched an attack ad against the Consumer Financial Protection Bureau, the agency the Massachusetts senator launched in 2010 following the financial collapse. The agency was created by Congress as part of the Dodd-Frank Wall Street Reform Act.

The ad portrayed a Soviet-like red banner with Warren’s face on it as the narrator slammed the CFPB for interfering with Americans’ financial decisions.

“They call it CFPB. Washington’s latest regulatory agency, designed to interfere with your personal financial decisions: that car loan you needed, your mortgage, that personal loan. With the Consumer Financial Protection Bureau, those who need help the most are denied. Washington, D.C., controlling your decisions, limiting your opportunity. Tell Congress to stop the CFPB now before they deny you,” the narrator states in the ad.

Warren immediately took issue with the “Commie dictator” ad and went on Twitter to fight back, launching a series of tweets.

So… Can we talk about that ad that just ran during the #GOPDebate where I look like a Commie dictator? — Elizabeth Warren (@elizabethforma) November 11, 2015

Wall Street has a problem: They know the @CFPB is working, & it's incredibly popular with the families it helps. #GOPDebate — Elizabeth Warren (@elizabethforma) November 11, 2015

The @CFPB has forced the big financial companies to return more than $11B to people they cheated on credit cards, mortgages, etc. #GOPDebate — Elizabeth Warren (@elizabethforma) November 11, 2015

Thousands of dollars on a TV ad is nothing compared to the money the big banks save if their GOP buddies go after the @CFPB. #GOPDebate — Elizabeth Warren (@elizabethforma) November 11, 2015

Wall Street knows if they soften @CFPB support, the GOP will feel better undercutting the agency in closed-door deals. #GOPDebate — Elizabeth Warren (@elizabethforma) November 11, 2015

So here's my message to Wall Street & their GOP buddies: we're ready to fight back to protect the @CFPB. #GOPDebate — Elizabeth Warren (@elizabethforma) November 11, 2015

Politico reports the American Action Network spent $500,000 to run the ad.