mean eliminating thousands of public sector jobs. the demonstration actually turned violent when reports say a group went on a rampage. they smashed windows. clashed with police, threw paint at britain's 2012 olympic countdown clock. one protester said it shows how angry people are getting. >> it shows just how much people feel and how much they are angry. this really is just a taste. this needs to be listened to. >> that scene of frustration is playing out across europe. let's bring in cnn international correspondent to bring us a better understanding of what is at the root of this. why are people so angry about these cuts in particular. >> because of the austerity measure they are deep cuts. in the uk these are the deepest cuts since xxx 2 they are enacting. 300,000 jobs in the public sector. students are facing a tripling