'Go to hell Barack' ad ignites controversy

'Go to hell Barack' ad ignites controversy, 'Go to hell Barack': Row over Washington Metro ad, Critics call for the "deeply disrespectful" message to be yanked — but the D.C. Metro says it's free speech. In the heat of a US presidential election year, with Americans immune to the polarized and bitter nature of political discourse, it takes a lot to shock them, especially in Washington.