From the death of John F. Kennedy in November 1963 until the congressional elections of November 1966, liberals were triumphant, and what they did changed the world. Civil rights and voting rights, Medicare and Medicaid, clean air and clean water legislation, Head Start, the Job Corps and federal aid to schools had their roots in the liberal wave that began to ebb when Lyndon Johnson’s Democrats suffered broad losses in the 1966 voting. The decline that 1966 signaled was sealed after April 4, 1968.

Liberals themselves share blame for the waning of their movement. Just because right-wing politicians used “law and order” as a code for race did not mean that concern about crime was illegitimate. On the contrary, the country was in the opening stages of a serious crime wave and had good reason to worry about rising violence.

Liberalism itself was cracking up in 1968. Liberals had turned on each other over Johnson’s Vietnam policy. The old civil rights coalition splintered as advocates of racial integration warred with defenders of Black Power, a slogan voiced in 1966 by a young activist named Stokely Carmichael.

Martin Luther King left this earth at a moment of gloom, at least about the short term. “I feel this summer will not only be as bad but worse than last time,” he said, four days before his death, in a sermon at Washington’s National Cathedral. He was referring to the urban riots of the previous summer. And then came the days of chaos that followed his assassination.

... contd.