Commentary: Think about the summer of 1968 as you watch the progress of 50 years evaporate

CHICAGO - From the perspective of Chicago's streets, the old guard seemed on the run in the summer of 1968. My students were dashing off to anti-war protests, and in the face of rallies and marches against the Vietnam War, President Lyndon Johnson had thrown in the towel, announcing he wouldn't run for re-election.

Now, in the summer of 2018, it feels like I'm watching 50 years of newsreel footage being run backward through a movie projector as the progress of half a century