Tonight on BBC1 at 22:45, there is a documentary being aired about the 2011 UK Riots. It looks like it will be worth watching.
Even without having seen it, I am positive that by analysing the text it will add to your understanding of media representations and postmodernism.
If you can't catch it tonight, check BBC iPlayer, it is more than likely to be made available online.
More info here: http://www.bbc.co.uk/programmes/b018cst8