WASHINGTON — Demonstrators have congregated in a Senate office building to protest Republicans’ handling of the sexual-assault accusation against Supreme Court nominee Brett Kavanaugh.

A group of roughly 100 people marched to the office of Judiciary Committee Chairman Chuck Grassley on Thursday for a sit-in, some with fists raised.

We're headed to @ChuckGrassley's office this morning because we #BelieveSurvivors. Brett Kavanaugh is unfit to serve on our nation's highest court. PERIOD. pic.twitter.com/nDkNBWE4OG — NARAL (@NARAL) September 20, 2018

The Iowa Republican senator plans a hearing on Monday for testimony from Kavanaugh and accuser Christine Blasey Ford, if she appears. Ford and Democrats want the FBI to investigate her allegations Kavanaugh assaulted her three decades ago, but Republicans are refusing.

The demonstrators chanted, “We believe Anita Hill! We believe Christine Ford!” Some told Grassley aides they themselves have been victims of harassment.

Hill is the law professor who during the Senate’s 1991 consideration of Clarence Thomas’ Supreme Court nomination accused him of sexual harassment.

Thomas and Kavanaugh have denied the accusations against them.

READ MORE: How the sexual assault accusation against Kavanaugh unfolded, in one timeline