well im not sure if it fits with your assessment, but we did human rights last term, and i decided to do "Ethnic Cleansing" in sudan... i found alout of information on the net on alot of news sites.
Whatever you choose to do, don't leave it till the last minute... i only picked my topic like 5 days before the assessment was due, lucky we only had to do a 6-8 min speech and make a visual... but i ended up getting 28.5 out of 30 which was pretty good...
anyways goodluck with your assessment