Activist, attorney and author Robert F. Kennedy Jr. at home in Los Angeles, Calif, on May 24, 2019. Robert F. Kennedy Jr. has evolved from an environmental lawyer concerned about mercury poisoning into a crusader for individual liberty. (Rozette Rago/The New York Times) WASHINGTON — Robert F. Kennedy Jr. stood before the Lincoln Memorial in January 2022 and condemned the federal government’s coronavirus response by railing against totalitarianism. Jews in Nazi Germany, he suggested, had more freedom than Americans facing vaccination mandates and school, church and business closures in the era of COVID-19. “Even in Hitler’s Germany, you could cross...