Fox News host Tucker Carlson fired back at Democratic Senate Majority Leader Chuck Schumer (D-NY), calling him a “coward” after Schumer refused to appear on Carlson’s show to discuss Schumer linking Carlson to the Buffalo massacre in which 10 people were killed.

On Tuesday, Schumer sent a letter to Fox News quoting The New York Times’ claim regarding the “Great Replacement Theory” that Carlson had, as Schumer wrote, “amplified this dangerous and unfounded theory in more than 400 episodes of his show.”

Schumer had also vilified Carlson on the Senate floor on Tuesday, ranting, “Every time MAGA Republicans or pundits vilify wrongly immigrants and call them invaders … Every time they falsely claim that millions of undocumented people cast ballots in our elections … Every time loud bigoted voices bemoan the disintegration of an imagined ‘classic’ America …The subtext is clear: these hard-right MAGA Republicans argue that people of color and minority communities are somehow posing a threat — a threat — to the American way of life.”

“And let’s be clear: it’s a message that has also found a special home in several right-wing outlets, and on one cable news channel in particular: Fox News,” he continued. “In a craven quest for viewers and ratings, organizations like Fox News have spent years perfecting the craft of stoking cultural grievance and political resentment that eerily mirrors the messages found in Replacement Theory.”