Amnesty International, one of the most active NGO on human rights in the world , has been fighting its cause for 50 years. Take a look to some of their posters throughout these years. Art can definitely be a form of activism. Artivism is not only reclaiming urban space, but a wider and more encompassing claim for freedom and justice which has no limits and extends to any kind of aesthetic expression. Picasso knew this well.
La Colombe et le Prisonnier, 1959
Photograph: Succession Picasso/DACS
A poster with an image donated to Amnesty by Pablo Picasso