Does change always mean progress?  Example: Climate of Fear

Identity, Continuity, and Change

Regency Acres bomb shelter diagram, Toronto Star (Jan. 17, 1959) " as found on the webpage "Historicist: Atomic Anxiety" from website Torontoist.com

"Famous Civil Defense film for children in which Bert the Turtle shows what to do in case of atomic attack. "

Video 9:15
Producer: Archer Productions, Inc.
Sponsor: U.S. Federal Civil Defense Administration 1951

Video of Calgary practicing an evacuation of its citizens, October 1955.
CBC Digital Archives  10:14

Igor Gouzenko (hooded)