From A7 News:
Muslim rioters clash with German police
["German police clashed on Saturday with Muslim protesters who were demonstrating against an anti-Islam protest in Bonn. Riots broke out when police attempted to break up the Muslim group, which was protesting against the far-right demonstrators, who displayed anti-Islamic caricatures during their protest"]
-read the rest here.
The A7 News article referenced above, as well as MSM media describe the Muslims as rioting against an "anti-Islam" protest. It would be more accurate to use the term "anti-Islamization" protest.
Jihad Watch sums up the Muslim rioting as an attack against free speech:
["More on the violent Muslim attack on free speech in Bonn, Germany, on May 5th (JihadWatch: "Bonn, Germany: Club-wielding army of 600 Muslims attack as Muhammad cartoons are shown publicly. 29 policemen hurt, 109 arrests." and "Muhammad cartoon demonstration in Bonn, Germany: Muslims shooting at the police. Police to free speech activists: "Shut up!" Peaceful demonstrators asked to leave.")