On April 4, 1968, American civil rights leader Dr. Martin Luther King Jr., was assassinated, leaving millions angry and disillusioned. In Indianapolis, a largely African-American crowd had gathered to hear Robert F. Kennedy speak. Many had not yet heard of Dr. King’s death, so Kennedy had to share the tragic news. He appealed for calm by acknowledging not only their pain but his own abiding grief over the murder of his brother, President John F. Kennedy.

Kennedy then quoted a variation of an ancient poem by Aeschylus (526–456 bc):

Even in our sleep, pain which cannot forget falls drop by drop upon…