There’s a recent post at Chateau Heartiste which is quite excellent:
There’s a link to a large collection of old photos from the United States dating 1935-1945, back long before things got completely messed up. One commenter does make the observation, though, that as much as can be seen to be right during that time period, it was also that time which made the boom generation possible, and all the chaos that they started. In other words (and metaphorically speaking), the boom generation was the tinder that lit the fire of modern leftist chaos, but there first had to be a spark in order for that to happen. There are other comments in that discussion which may offer some ideas as to how that might have worked—in general it’s one of the better comment threads I’ve seen in recent years, with interesting tangents going in several directions.