40 years ago there was a coup in Lisbon. Streets were invaded by tanks thanks to the military officers who opposed the regime (MFA-Armed Forces Movement). Soon the streets were crowded with people who joined them and all this would lead to the fall of Salazar's dictatorship, which lasted for 48 years, as well as to the withdrawal of Portugal from its African colonies, putting an end to the 13 years war.
A street flower seller gave a red carnation to a soldier and the people followed her gesture. Quickly all soldiers on the streets had flowers on their uniforms or into the muzzles of their rifles. The red flower became a symbol and that's why the April 25 Revolution is also known as the Carnation Revolution.
Censorship was abolished and the Portuguese finally knew what it was like being able to read any book or to express their thoughts without getting arrested, tortured or killed by the political police (PIDE) - a kind of Gestapo.
Unfortunatelly, a couple of decades later a buch of incompetent, greedy and corrupt wannabe politicians got into power and have led this country to the chaotic economic situation we are currently going through, making the life of the Portuguese very difficult due to so much austerity as a consequence of the 78 billion bailout, not to mention the loss of sovereignty.
Many murals have been painted to celebrate the revolution's 40th anniversary, some are much better than the one above but they are located on places I could not stop.