For years, the liberal left has thought of Italy as a humane country where refugees are welcomed. But following a series of attacks on African migrants, this appears to have suddenly changed. Dig a little deeper however, and it quickly becomes clear that far-right violence didn't rise out of nowhere, it was inspired by a toxic politics of race in Italy that has been worsening since the economic crash of 2008. Hsiao-Hung Pai reports from Sicily.