Whether you follow contemporary art or international politics, you’ve probably heard of Chinese artist Ai Weiwei. Renowned for his “Birds Nest” stadium at the Beijing Olympics, it was his social activism and criticism of the Chinese government that earned him 81 days of detention, house arrest and the loss of his passport. An intelligent artist and social commentator, his exhibit, Ai Weiwei: According to What? is currently touring the US. I had the opportunity to see it at the Hirshhorn Museum in Washington DC last year. I’ve been blown away by the beauty of a painting before, but it wasn’t until Ai Weiwei’s piece “Straight” that I encountered a work of art so emotionally powerful that I am still thinking about it a year after seeing the show.