Bilbao riot: radical youths burn barricades, attack passersby; 20 arrested
Violence erupts after peaceful student protest against far-right agitator
Hundreds of radical youths wreaked havoc in Bilbao on Monday, setting cars and bins on fire, attacking passersby, and clashing with passersby before Basque police arrested around 20 people, many of them minors, according to regional security minister Bingen Zupiria.