shout something from the rooftops

President Barack Obama's quick but highly public handshake with Raúl Castro, the Cuban president, at Nelson Mandela's memorial service in Johannesburg on December 10th looked like a sign of rapprochement between America and Cuba meant to be shouted from the rooftops. But don't read too much into it http://econ.st/J3kBiy

shout something from the rooftops

talk openly about something personal or secret: he had kept quiet about his love when he’d wanted to shout it from the rooftops