Assalamu alaikum
One of the brothers recently posted me this link which I think is a worthwhile set of videos on YouTube to watch.
These set of five videos are about the modern banks in the world today and how they simply print money even though there is no value to it really, simply to loan it out to people. It is about these kind of practises in modern banking which do help us to appreciate that had Riba been prohibited, as it is in Islam, a lot of these harms would not have been present.
They are rather long and need a bit of attention to follow the message - so when you have time and your min is tuned on, its worthwhile to watch it - you'll get quite a few points from it and appreciate Islam without Riba (usury/interest). Note though, the part four with some suggestions for future are those of the program writers and debatable to say the least, however, it is still worth while to watch these videos.
Money as debt
Part One:
http://au.youtube.com/watch?v=cy-fD78zyvIPart Two:
http://www.youtube.com/watch?v=hfXavRTM4FgPart Three:
http://www.youtube.com/watch?v=_yvRZoM-2r8Part Four:
http://www.youtube.com/watch?v=f0p8LepIuVMPart Five:
http://www.youtube.com/watch?v=PzXZ_Hs1g6U