In 2003, you could see the following poster on every street
corner, and every bus stop in Israeli cities. It was part of a campaign
bridging gaps between different sectors in Israeli society, lead by a
profit organization called “appeasement order”.
A few weeks passed, and the word of the insolvability of the cube in the poster quickly spred by word of mouth. The newspapers, in turn, published cynical editorials on the futility of the campaign and the insolvability of Israeli problems at large. Soon after, the posters were replaced with ones depicting solvable cubes.
Whether this was a successful campaign or not, is not for me to say, but at least it made the whole nation talk about the cube, if only for a week.