10th December is Human Rights Day across the world, because in 1948 the United Nations ratified the Universal Declaration of Human Rights . Many people around the world are still denied those rights by corrupt or unfair political systems. Amnesty International asks you to send encouragement to someone in danger or unjustly imprisoned. If you've got a pack of greetings cards at home, could you keep one aside to send a friendly greeting? Your personal message will mean the world to a prisoner in a cell or a family waiting for news of a loved one. Here are two of the messages received back last year: "You have giving me hope and shown me a lot of love. When I read some of your letters they make me so happy that I forget about the deplorable living conditions here in Aba prison." Patrick Okoroafor, Nigeria. "Whenever I am feeling depressed my eye falls on these cards and the loving caring feelings by thousands of supporters elivate my spirits in a second... Why should I ...