Being on behalf of the Israeli viewpoint, I suppose I could find loads of material online which would slander Hamas, however the links herein have Hamas more or less speaking for themselves, and let you decide.
This part is under construction.
Ezadeen AlQassam is the Hamas' military division. I wanted to post a link to Hamas website, however it seems that Hamas doesn't have an English website, only its military division does.
For an exercise in journalism, check out any report or fact in this site and Google it to compare it to reliable sources (such as BBC or Reuters).
The translated Hamas charter. For anyone who thinks Hamas is just fighting against "the occupation". There are some selected quotes followed by the full text.
Hamas' secret war strategy, as voiced by Fathi Hammad, Hamas MP.
Hamas' ideology, in their own voices.
Hamas indoctrinates Palestinian children with hatred and violence.