No one symbolizes the populist nationalism on which Donald Trump ran more than White House chief strategist Steve Bannon, the former chairman of Breitbart News.

So Bannon’s newly precarious position in the administration—an ascendant, more centrist faction associated with Trump’s son-in-law Jared Kushner is trying to take him down–is about more than just Bannon the man. It is about id versus superego. It’s about the place of the hard right in the administration, and whether the movement spearheaded by Bannon can govern. And if Bannon goes, the backlash could be considerable. In fact, even with him still in the White House, that backlash has already begun, with some of Trump’s most vocal supporters becoming restive over his flip-flops on Syria, China, the Ex-Im bank and other issues.

“I think that Steve has come to be the symbol of keeping the flame of the Trump revolution in the White House,” said Sam Nunberg, a former Trump adviser. “So I would assume that there would be hysteria all over talk radio and conservative media were Steve not in the White House and the White House would be run by Democrats.” Nunberg specified that he was referring to Gary Cohn, Trump’s top economic adviser, who is among Bannon’s greatest opponents and who has become a target of Bannon allies in the right-wing media.