Tucker Carlson debated New York City Councilman Jumaane Williams (D) over the city's Puerto Rican Day Parade deciding to honor a FALN member.

Carlson said the parade organizers decided to honor Oscar Lopez Rivera, who was implicated in several domestic terrorist attacks in the 1980s.

The FALN committed at least 100 bombings in the Lower 48, according to National Review.

Rivera spent decades in prison until his sentence was commuted by President Barack Obama.

Carlson told Williams that Lopez Rivera killed five people in New York in his quest to have Puerto Rico become its own Communist society.

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"You represent New York City, a city you think would be sensitive to terror [but are] endorsing a terrorist," Carlson said.

Williams said Lopez Rivera's "terrorist" status depends on the observer's vantage point.

He said the U.S. considered Nelson Mandela a terrorist until 2008, and that Dr. Martin Luther King Jr. was assassinated for his activism.

"Are you really comparing him to Nelson Mandela?" Carlson asked. "The most dangerous man in America [according to] the FBI?"

Williams said he supported nonviolent activism and maintained Lopez Rivera is not a terrorist.

The NYPD and other groups in town have condemned the parade's decision.

Watch the clip above.

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