In 1968 the antiwar left punished Vice President Hubert Humphrey for supporting his boss Lyndon Johnson's war in Vietnam. Many young activists either withheld their votes from or gave reluctant support to the Democrat who ultimately lost to Richard Nixon. Then Nixon prolonged the Vietnam War four more years. The distinguished Georgetown University historian Michael Kazin says young leftists today who are considering not voting for President Joe Biden because he refuses to chastise Israel for the war in Gaza, may want to absorb the lesson of '68 or risk helping Donald Trump return to the White House. Kazin, who was a self-described radical in the 1960s, explores the parallels between '68 and the 2024 election cycle with a focus on the genuine dilemma faced by the antiwar left.