Dare
The program that taught a generation about drugs by describing them vividly to children who had not previously considered them. Whatever it did for drug use, the logo worked: red and white, all caps, a shape a nine-year-old could draw from memory and wear on a shirt. One of the most successful icons ever handed out for free.
Then the shirt got away from it. The people who wore it hardest were the ones it was aimed at — stoners, skaters, punks, anyone who liked the joke of wearing a warning as a badge. Worn straight-faced it reads as irony, which is the most durable way to keep a logo alive; the program ended and the merchandise never did.
The line under it read D.A.R.E. to resist drugs and violence. Mine reads to resist fads and trends. The same graphic, the same voice of authority, aimed at the thing it was actually teaching — that what you say no to is decided for you, and that the acronym is a dare either way.