It seems as if 95% of news stories focus on poverty, war and chaos in the continent. They rarely go so far as to differentiate among countries.
In fact, many African nations are great centers for innovation. Kenya and Nigeria spring to mind for higher education and mobile computing.
As a way of confronting condescending stereotypes, I have often fantasized about organizing a group of Nigerian school children to "help build a school somewhere in America" — a twist on the cliche trip that many U.S. students take to Africa — because education in some Nigerian cities is far superior to most U.S. high schools.