Photo by Amy Sussman/Getty Images for Vanity Fair The gates of political debate have been thrown open. Nick Fuentes is burrowing into Maga’s algorithm on the right. Tucker Carlson is gesturing to ideas both mystical (demons) and occasionally dictatorial (one of his recent podcasts was an apologia for Oswald Mosley). Taboos are being broken. Conventions are no longer respected. Old-school decorum feels anachronistic. A day spent listening to everything Trump says makes most other things sound innocuous. His stream of consciousness is exactly what social checks are designed to stop. So far, post-taboo politics has been to the benefit of the right. Now, an analogous debate is going on inside the Democratic establishment, if only in terms of the question: what disqualifies someone from the political arena? Democrats cannot decide whether to “platform” the streamer Hasan Piker, a socialist commentator who says that Hamas is a thousand times better than Israel. He calls himself the Rush Limbaugh for Zoomers.…