This stunning work of art honours Salgueiro Maia, and commemorates the 40th anniversary of the Carnation Revolution. The Revolution saw the end of dictatorship in Portugal, as well as the brutal Colonial Wars in Africa, but remarkably, spilled virtually no blood. Red carnations were placed in the muzzles of guns and tanks, symbolizing the desire for a peaceful change of regime. Maia was an army captain at the time, who led a column of armoured vehicles that laid siege to the governmental ministries in Lisbon, ultimately forcing the surrender of the last prime minister of the Estado Novo regime, Marcello Caetano.
This is truly one of the most moving and beautiful pieces of street art that I have seen.