O que é que deu errado com a democracia ??

http://www.economist.com/news/essays/21596796-democracy-was-most-successful-political-idea-20th-century-why-has-it-run-trouble-and-what-can-be-do

Democracy was the most successful political idea of the 20th century. Why has it run into trouble, and what can be done to revive it?
Leia pelo link lá de cima