Robert F. Kennedy Jr. is a crank. His views are a mishmash of right-wing fantasies mixed with remnants of the progressive he once was: Bitcoin boosterism, anti-vaccine conspiracy theories, assertions that Prozac causes mass shootings, opposition to U.S. support for Ukraine, but also favorable mention for single-payer health care. But for his last name, nobody would be paying him any attention — and despite that last name, he has zero chance of winning the Democratic presidential nomination.