Christopher Rufo is arguably the most successful activist of the MAGA era. He rose to prominence fighting D.E.I. initiatives and critical race theory. In President Trump’s second term, he’s had a huge influence on policy, from Trump’s executive orders against D.E.I. and the attacks on the Department of Education to the ICE and C.B.P. deployments to Minneapolis. Rufo, helpfully, calls his shots. He has published a guide, “The New Right Activism: A Manifesto for the Counterrevolution,” in which he argued for the value of “agitprop” and counseled that “political life moves on narrative, emotion, scandal, anger, hope, and faith — on irrational, or at least subrational, feelings.” But more recently, in his writing and on the podcast he co-hosts, “Rufo & Lomez,” he seems worried about the new right he has helped build: its attraction to conspiracy theories, its racialist thinking, its internal fissures. So I wanted to have him on the show to talk about the problems he sees on his side, but also to interrogate whether he may have scored short-term victories while seeding profound long-term problems. Rufo is a senior fellow and director of the initiative on critical race theory at the Manhattan Institute. He’s a contributing editor of City Journal and the author of “America’s Cultural Revolution: How the Radical Left Conquered Everything.” This episode contains strong language.