A radical Brooklyn lawmaker on Monday introduced a new state bill to rename Columbus Day to Indigenous People’s Day, and slammed the famed explorer as a “murderer.”

“This land that all of us inhabit is stolen land — stolen from the indigenous people who were slaughtered and forced onto reservations,” Assemblyman Charles Barron told The Post, adding that “they should be recognized in replace of Columbus Day.”

Barron described Columbus as a “colonizer” who “enslaved Africans and slaughtered indigenous people.”

“He deserves scorn, not glorification,” he added.

Bill A8676 states: “Renaming the holiday is a small beginning in recognizing indigenous people for their historic ongoing contributions to history, culture and economic life.”

“Not only did Columbus not discover America, some historians say he never even stepped foot on American soil,” Barron said.

Several states, including Vermont, Minnesota and Alaska, have declared the second Monday in October “Indigenous People’s Day” as an alternative to Columbus Day.

This year, the holiday comes amid a national debate over statues dedicated to controversial historical figures triggered by the violence sparked by white supremacist groups in Charlottesville, Virginia, in August over the removal of a statue of Confederate Gen. Robert E. Lee.

A pair of Columbus statues in the Big Apple were recently vandalized, including one in Central Park, where a vandal daubed red paint on its hands and scrawled “Hate will not be tolerated” on its pedestal.

Meanwhile, Mayor Bill de Blasio has appointed a commission to review monuments dedicated to controversial historical figures like Columbus.

“Not only should the Columbus statues come down, but also the statues of Thomas Jefferson … and George Washington,” Barron said.

“It’s easy to talk about the Confederacy,” Barron said, referring to the removal of Confederate statues, adding, “It’s more challenging for Americans to realize the history started off with enslavement.”

Barron’s bill will go through the committee process in January.