Chaos broke out as police arrested an 18-year-old Somalian in St Georg on Wednesday.
The teenager was accused of threatening two workers at a sports betting shop in the German city.
Police said: “The 18-year-old threatened the two employees to cut their necks and explained this with appropriate gestures.”
Hamburg Police arrested the man.
Extra police were called to the scene on Steintorweg
“Within a very short time 80 – 100 black Africans arrived before the sports betting business.
“Out of this group statements were made against the police officers such as ‘skin off’, ‘p*** off’ and ‘this is not America’.”