Watch live: Protesters take to Boston’s City Hall Plaza ahead of Jeff Flake event

Hundreds gathered Monday before Sen. Jeff Flake's scheduled appearance at the Forbes Under 30 Summit to urge the Arizona Republican and other senators to vote against Supreme Court nominee Brett Kavanaugh. Boston Mayor Marty Walsh, City Councilor and congressional candidate Ayanna Pressley, New York congressional candidate Alexandria Ocasio-Cortez, and Massachusetts gubernatorial candidate Jay Gonzalez were among the expected speakers.