I've been checking out 2 interesting magazines recently, both aren't big or famous but they deal with politics and world injustice. First up is Canadian This magazine, which features articles on science, society, alternative art and world Canadian politics.

New Internationalist concerns itself with issues of injustice around the world.
Read this report on the World Social Forum 2005 to understand a little more of this burgeoning social issues conference that gathers activists of different fields (union, anti-corporation, anti-war, writers etc.) from different regions, as well as politicans and journalists twice a year (after this year). Hopefully it will grow to the point where many substantial and practical ideas and plans about social justice can be proposed (but not to the point that it ignores and loses its grassroots participants) and agreed upon and its influence will increase so that world leaders and politicians would respect this forum and heed its advice.