Domino effect of falling communist governments.
Herbert, B. (1989, November 15). “We interrupt this bulletin from Bulgaria — which interrupted the bulletin from East Berlin — which interrupted the bulletins from Moscow and Poland and Hungary, to bring you this from Czechoslovakia.” [Cartoon] Herbert L. Block collection (Library of Congress). Retrieved from the Library of Congress, https://www.loc.gov/item/2012642399/.
A 1989 Herblock cartoon, copyright The Herb Block Foundation.