For 50 years Amnesty International has been fighting the good fight.
During that time they have produced many fantastic posters.
Flick through any major award annual and you're sure to find an Amnesty poster.
These three are particular favourites of mine.
Not because of the graphics especially but because I love seeing well known artists getting involved with protest and issues.
The one above is by Picasso. it dates from 1959
The two below are by Spanish artist Juan Miro from 1977 and Alexander Calder from 1975