More than 1,000 demonstrators had demonstrated in the downtown area of Stuttgart when, according to the police, firecrackers were repeatedly fired in the direction of the police forces. Several officers complained about respiratory irritations. The organiser of the meeting then ended the rally at 5:30 pm. Afterwards, according to police reports, several groups of former rally participants marched through the downtown area uncontrolled and wearing masks in some cases.”They responded extremely violently to the presence of the police and again fired firecrackers at them,” the police reported. On Saturday evening, the police told the SWR radio station that 130 people had been temporarily arrested and that the officers had to use pepper spray. 

politikstube.com/kurden-und-tuerken-aggressiv-und-keinen-respekt-vor-der-polizei/