There seems to be a wide variety of lesson plans on many issues dealing with human rights and for many different levels of students. I don't know whether these lesson plans could be used as presented, but they appear to provide at least a blueprint for a lesson plan. I also like the references given in the lesson plan, and the plans are easily downloaded.

This seems to be a place to start with for high level ESL students. The site lays out a wide range of issues, there are many articles to read, and the site appears to be very user-friendly. Look at the geographical organization. One can also search by category of human rights. Perhaps as an initial exploration of the topic, students could choose an issue they found interesting and report back to their small groups what the issue is and why they chose it. This might encourage other students to become familiar with that issue.

A site with many functions. Students seem to like it.