On Twitter, Dr Caveman had used the N-word and other racist terms toward Black people, like “gibsmedat.” He’d called President Donald J. Trump “Trumpenfuhrer” and expressed hope for “Generation Zyklon,” a term for young supporters of the far right and neo-Nazism. (Zyklon B, a cyanide-based insecticide, was used by Nazi Germany to kill Jews and others in gas chambers.) On another social-media platform, he’d called Islam a “pedophilia glorifying death cult,” and he had tweeted that Muslims “are either at your feet or at your throat.”
