Law enforcement authorities arrested at least 19 people during riots in the Spanish city of Bilbao, state broadcaster RTVE reports. According to the media, the incidents occurred after several thousand people demonstrated near a local university against an event featuring the ultra-conservative activist Vito Quiles. Rioters threw stones at policemen and the police station, set garbage cans and vehicles on fire, and caused damage to public property. Video: TASS/Reuters/EFE.