In Havana, U.S. turns off sign critical of Cuban government

In Havana, U.S. turns off sign critical of Cuban government

• Sign's deactivation comes as relations between U.S., Cuba improve.
  
• Electronic sign was put on U.S. interests section building in Havana in 2006.
  
• Sign ran quotes from U.S. heroes, blasted Cuban government's policies.
  
• Cuba erected billboards to block the sign; billboards were taken down this year.