"Republicans brayed that Democrats, who were happy to align themselves with the forces of social change in 1960 and 1964, had by 1968 been subsumed by them. The low-tax, anti-government rhetoric that defines modern Republicanism has its roots in the simmering white resentments that emerged in the late nineteen-sixties, animated by the belief that the federal government had become a tool for redistribution of white wealth into the hands of undeserving black and brown communities. Donald Trump represents the full expression of that belief."
Jelani Cobb at The New Yorker connects the 2016 presidential campaign to 1968.
As does Josh Marshall at Talking Points Memo.
As does Rick Perlstein at In These Times.