Political graffiti surges in popularity because of the crackdown on nearly every other means of expression.
See
also: “After graffiti calling for Mugabe to be ousted appeared in the bathrooms of an army barracks, the government announced a 300 percent pay increase for soldiers and teachers. ‘It is a way of buying off the soldiers,’ said [opposition activist] Moyo. ‘Mugabe is a terrified man.’”