The softness, the joy, the lightheartedness, and the friendliness of the design contrasts with the way that we tend to view controversy — as a sharp, dangerous, destructive thing to be avoided.
By blending the softness of design with the "harshness" of the words "controversy welcome," you "subvert" the expectations onlookers have about controversy.
It's so cutesy, what is going on here? Perhaps controversy isn't so dangerous?
And in the end, it will hopefully invite conversation and inquiry from the confused and the intrigued!
