Political commentator and journalist Mehdi Hasan spoke out about his shocking viral debate with 20 right-wingers that aired Sunday on Jubilee, calling at least half of them “explicitly fascist or white nationalist.”

The debate amassed millions of views online as Jubilee faced backlash for featuring far-right extremists, including one who proclaimed himself to be a fascist and another who told Hasan to “get out” of the United States.

The progressive journalist told The Bulwark’s Tim Miller that he usually doesn’t “turn down invitations to debate unless it’s in bad faith” and tries not to “debate fascists and racists.”

But Hasan said that “it became very clear” to him early on that he was dealing with far more than he’d bargained for.

“I came away, uh, pretty stunned, and it takes a lot to make me speechless,” he told Miller.