Pictured is a protest against US involvement in Vietnam, it occurred in Berkeley, CA in December 1965.
The first thing that came to mind was Mad Men. Well-dressed people with the distinctive design of the early 1960s. While famous Vietnam protest photos show the student revolt and the rise of counterculture, there were opponents early on. In 1965 the war had about a 60% approval rating, but there were still large protests.
Opposition to Vietnam may be crystallized in the American conscious as Kent State, days of rage, and the hippies, but it was inaugurated by people who wouldn’t look out of place in Leave It to Beaver.
Unspoken Politics 