Amnesty International is an organization that fights for compliance with human rights around the whole world. Active since 1977, this association is already gone through many years of petitions, letter writing campaigns, protests and trying to raise awareness. And this commitment pays off, one third of the actions result in an (immediate) release of an unjustly convicted person or the ultimate respect for the human rights that were violated.
But to be able to continue putting pressure on the authorities, as many people as possible need to contribute in one way or another. Whether you sign a petition, write a letter or take action in a different way, everything helps to prevent or fight injustice.
For more information and/or for taking action, see:
Amnesty International through the years?
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The Idealist 