1964 was the year the ’60s really began. That’s the year American culture fractured and eventually split along ideological lines, establishing the poles of societal debate that are still raging today. The Beatles led a British Invasion of popular music, Muhammad Ali, who called himself “The Greatest,” shocked the world and became the heavyweight champion, three civil rights workers were murdered in Mississippi, and activist Fannie Lou Hamer declared “I'm Sick and Tired of Being Sick and Tired.” 1964 was a year of remarkable transition that prefigured 60 years of tumultuous change.