Riots at commemoration: attack on police officer. Thousands of people in Berlin peacefully commemorate the murder of communist leaders Karl Liebknecht and Rosa Luxemburg.

But some participants suddenly attack police officers. A 25-year-old Dane is said to have targeted police officers in Berlin on January 14th and injured an officer. 21 emergency services were injured and 5 had to stop their duties after being injured from severe beatings. The murder of communists Karl LieBknechts and Rosa Luxembourg on January 15, 1919 is commemorated annually in Berlin.