As you know, there are so many cases of human rights abuses in North Korea. If you do petitions sign here, you can help the North Korean who suffer hardship of life(even though it may be a little help).
If you click on the link, you can see some photos which reveal the reality of life in North Korea.
http://anonhq.com/20-photos-north-koreas-kim-does-not-want-you-to-see/