The pattern you're seeing is that there's an 80 year cycle, of four 20 year "generations": The Survivors, Boomers, Silents, Builders. It was from Mike Regele Death of the Church, which was a message to the Church to be willing to change with the times, or it would become irrelevant. I had a whole write-up on this, but it was never used in any of my web pages, so I'll have to gather as much as I can from the book.
There are four generic names of the four generations for all cycles: "Idealists", "Reactives", "Civics" and "Adaptives".
The earlier Reactives were those who survived WWI, then became the "lost generation" of the 1920's. Then came the Builders (1901-24), who were the early 20th century generation who came out of the crisis as heroes, grew up and built most of the modern world. Riding on the heels of this are the Silents (1925-42), which are the generation who became progress "Blockers" when they came of age in the later half of the century. Then came the Boomers (1943-60), who were the pampered beneficiaries of the 50's. Afterward, you had the next "Reactive" group, which was Generation X (1961-81), which was said to become the new "lost generation" just like their turn-of-the-century great-great-grandparents. The Book speculated that the Millennials or Generation Y (1982-2003) as Civics would become the next Builders after massive disasters in the early 21st Century (The way things are playing out now, this seems to be spread out, though who knows).
The Builders and Millennials are both overly "protected" by their parents, and have an "inner"-directed focus that is "civic". The Silents were "suffocated", and deal in "crisis", and thus "adaptive". The Boomers were "indulged", of course, and turned to an "idealistic", "outer-directed" focus. The Survivors were then "criticized" (by their idealistic Boomer parents), and became the "reactive" cynics who lead "awakening" as they throw off the ways that came before them.
So what you're seeing in the similarities of the 50's with the 80's, is probably the Boomers being "indulged", and the Millennials being "protected", since their parents were the cynics who dealt with an increasingly difficult world. So the Boomers (Idealist) and Milennials (Civic) will have some similarities, as do the Silents (Adaptive) and Gen.X (Reactive)