Riots in France
Fausta has covered the riots in France extensively; go there and scroll down for more.
More or less the same is happening in tolerant Denmark.
Although the case of France is more complex as it is compounded by high unemployment (the French social model), neo-colonialism of the worst kind, and denial, failing to realize that these episodes will be repeated across Europe is pure folly. It is inevitable. The first step should be for people in the countries involved to understand that the immigration policies forced upon them by their governments have been dictated by greed and fear (remember the secret compacts in the 70's with terrorists to avoid bombings and hijackings?), covered under a blanket of mushy humanitarian propaganda, and vote accordingly next time.