Os Perseguidos. The name translates to "The Persecuted" and this lifesize bronze sculpture was created by Pedro Augusto Franco dos Anjos Teixeira in 1969.
The statue is located next to the Anjos Teixeira Museum in Sintra with the Palacio Nacional in the background. It represents the struggle for freedom, assumedly against the dictatorship which Portugal endured until the 1970s.
There is actually an identical statue in Almada - across the river from Lisbon - which is actually the original. This one was cast from the working model.