I didn't even bother clicking the link. It's all lies. I know this because people over the pond are too civilized to resort to violence! <sarcasm>
I have a gaming, er, buddy (sort of) from the UK who assures me every chance he gets that Americans are violent and unenlightened neanderthals, while europeans are too intellegent and evolved to stoop so low. Pointing out the football (soccer) riots, and sundry madness his "people" get up to doesn't even register with him.
I know this little diatribe wasn't the intent of the original post, but it never ceases to amaze me how utterly people (anywhere, and of any stripe) can blind themselves to the truth.